diff --git a/vector/src/debug/res/layout/activity_test_material_theme.xml b/vector/src/debug/res/layout/activity_test_material_theme.xml
index f6f12942fe..21a2d3fbf5 100644
--- a/vector/src/debug/res/layout/activity_test_material_theme.xml
+++ b/vector/src/debug/res/layout/activity_test_material_theme.xml
@@ -159,6 +159,7 @@
             <com.google.android.material.floatingactionbutton.FloatingActionButton
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:importantForAccessibility="no"
                 android:src="@drawable/ic_settings_x" />
 
         </LinearLayout>
diff --git a/vector/src/main/res/layout/composer_layout.xml b/vector/src/main/res/layout/composer_layout.xml
index 5dd24676c1..03e347a72f 100644
--- a/vector/src/main/res/layout/composer_layout.xml
+++ b/vector/src/main/res/layout/composer_layout.xml
@@ -36,6 +36,7 @@
         android:id="@+id/composerRelatedMessageAvatar"
         android:layout_width="0dp"
         android:layout_height="0dp"
+        android:contentDescription="@string/avatar"
         tools:ignore="MissingConstraints"
         tools:src="@tools:sample/avatars" />
 
diff --git a/vector/src/main/res/layout/composer_layout_constraint_set_compact.xml b/vector/src/main/res/layout/composer_layout_constraint_set_compact.xml
index bd00c7743c..9765bb31ba 100644
--- a/vector/src/main/res/layout/composer_layout_constraint_set_compact.xml
+++ b/vector/src/main/res/layout/composer_layout_constraint_set_compact.xml
@@ -42,6 +42,7 @@
         android:id="@+id/composerRelatedMessageAvatar"
         android:layout_width="40dp"
         android:layout_height="40dp"
+        android:contentDescription="@string/avatar"
         android:visibility="invisible"
         app:layout_constraintBottom_toTopOf="parent"
         app:layout_constraintEnd_toStartOf="parent"
@@ -162,6 +163,7 @@
         android:layout_height="56dp"
         android:layout_marginEnd="2dp"
         android:background="@drawable/bg_send"
+        android:contentDescription="@string/send"
         android:scaleType="center"
         android:src="@drawable/ic_send"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/vector/src/main/res/layout/composer_layout_constraint_set_expanded.xml b/vector/src/main/res/layout/composer_layout_constraint_set_expanded.xml
index 49f45ab654..24397e4abf 100644
--- a/vector/src/main/res/layout/composer_layout_constraint_set_expanded.xml
+++ b/vector/src/main/res/layout/composer_layout_constraint_set_expanded.xml
@@ -42,6 +42,7 @@
         android:layout_marginStart="8dp"
         android:layout_marginTop="8dp"
         android:layout_marginBottom="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintBottom_toTopOf="@id/composerRelatedMessageActionIcon"
         app:layout_constraintEnd_toStartOf="@+id/composerRelatedMessageTitle"
         app:layout_constraintStart_toStartOf="parent"
@@ -93,6 +94,7 @@
         android:layout_width="48dp"
         android:layout_height="48dp"
         android:background="?android:attr/selectableItemBackground"
+        android:contentDescription="@string/action_close"
         android:src="@drawable/ic_close_round"
         app:layout_constraintBottom_toBottomOf="@id/composerRelatedMessageContent"
         app:layout_constraintEnd_toEndOf="parent"
@@ -165,6 +167,7 @@
         android:layout_height="56dp"
         android:layout_marginEnd="2dp"
         android:background="@drawable/bg_send"
+        android:contentDescription="@string/send"
         android:scaleType="center"
         android:src="@drawable/ic_send"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/vector/src/main/res/layout/dialog_disclaimer_content.xml b/vector/src/main/res/layout/dialog_disclaimer_content.xml
index 89fa1395b9..e1442f39f4 100644
--- a/vector/src/main/res/layout/dialog_disclaimer_content.xml
+++ b/vector/src/main/res/layout/dialog_disclaimer_content.xml
@@ -19,12 +19,14 @@
         <ImageView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_riot_icon" />
 
         <ImageView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_margin="32dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_arrow_right"
             app:tint="?riotx_text_secondary"
             tools:ignore="MissingPrefix" />
@@ -32,6 +34,7 @@
         <ImageView
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:importantForAccessibility="no"
             android:src="@drawable/element_logo_green" />
 
     </LinearLayout>
diff --git a/vector/src/main/res/layout/fragment_keys_backup_restore_success.xml b/vector/src/main/res/layout/fragment_keys_backup_restore_success.xml
index b897d2fcdd..2fea5b0520 100644
--- a/vector/src/main/res/layout/fragment_keys_backup_restore_success.xml
+++ b/vector/src/main/res/layout/fragment_keys_backup_restore_success.xml
@@ -11,6 +11,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="36dp"
+        android:importantForAccessibility="no"
         android:src="@drawable/key_big"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/fragment_keys_backup_setup_step1.xml b/vector/src/main/res/layout/fragment_keys_backup_setup_step1.xml
index 76efdb4e21..ee1e53b1d4 100644
--- a/vector/src/main/res/layout/fragment_keys_backup_setup_step1.xml
+++ b/vector/src/main/res/layout/fragment_keys_backup_setup_step1.xml
@@ -12,6 +12,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="@dimen/layout_vertical_margin"
+        android:importantForAccessibility="no"
         android:src="@drawable/backup_keys"
         app:layout_constraintBottom_toTopOf="@+id/keys_backup_setup_step1_title"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/fragment_keys_backup_setup_step3.xml b/vector/src/main/res/layout/fragment_keys_backup_setup_step3.xml
index bffc7a5f76..341f83b589 100644
--- a/vector/src/main/res/layout/fragment_keys_backup_setup_step3.xml
+++ b/vector/src/main/res/layout/fragment_keys_backup_setup_step3.xml
@@ -20,6 +20,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="60dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/backup_keys"
             app:tint="?riotx_text_primary"
             tools:ignore="MissingPrefix" />
diff --git a/vector/src/main/res/layout/fragment_login.xml b/vector/src/main/res/layout/fragment_login.xml
index 425b1266f8..fb0937d6d2 100644
--- a/vector/src/main/res/layout/fragment_login.xml
+++ b/vector/src/main/res/layout/fragment_login.xml
@@ -19,6 +19,7 @@
                 android:id="@+id/loginServerIcon"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
+                android:importantForAccessibility="no"
                 app:tint="?riotx_text_primary"
                 tools:ignore="MissingPrefix"
                 tools:src="@drawable/ic_logo_matrix_org" />
diff --git a/vector/src/main/res/layout/fragment_login_splash.xml b/vector/src/main/res/layout/fragment_login_splash.xml
index fe845cd20e..7edaa99016 100644
--- a/vector/src/main/res/layout/fragment_login_splash.xml
+++ b/vector/src/main/res/layout/fragment_login_splash.xml
@@ -36,6 +36,7 @@
             android:id="@+id/loginSplashLogo"
             android:layout_width="64dp"
             android:layout_height="64dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/element_logo_green"
             android:transitionName="loginLogoTransition" />
 
@@ -44,6 +45,7 @@
             android:layout_width="wrap_content"
             android:layout_height="44dp"
             android:layout_marginTop="8dp"
+            android:contentDescription="@string/app_name"
             android:src="@drawable/element_logotype"
             app:tint="?colorAccent"
             tools:ignore="MissingPrefix" />
diff --git a/vector/src/main/res/layout/fragment_login_terms.xml b/vector/src/main/res/layout/fragment_login_terms.xml
index d093709d6d..0bedf56e93 100644
--- a/vector/src/main/res/layout/fragment_login_terms.xml
+++ b/vector/src/main/res/layout/fragment_login_terms.xml
@@ -13,6 +13,7 @@
 
         <ImageView
             style="@style/LoginLogo"
+            android:importantForAccessibility="no"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
diff --git a/vector/src/main/res/layout/fragment_matrix_profile.xml b/vector/src/main/res/layout/fragment_matrix_profile.xml
index c380ea293c..081d31b800 100644
--- a/vector/src/main/res/layout/fragment_matrix_profile.xml
+++ b/vector/src/main/res/layout/fragment_matrix_profile.xml
@@ -15,9 +15,9 @@
 
         <com.google.android.material.appbar.CollapsingToolbarLayout
             android:id="@+id/matrixProfileCollapsingToolbarLayout"
-            android:theme="@style/Vector.Toolbar.Profile"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
+            android:theme="@style/Vector.Toolbar.Profile"
             app:contentScrim="?riotx_background"
             app:layout_scrollFlags="scroll|exitUntilCollapsed|snap"
             app:scrimAnimationDuration="250"
@@ -53,6 +53,7 @@
                         android:layout_marginTop="8dp"
                         android:layout_marginBottom="8dp"
                         android:alpha="0"
+                        android:contentDescription="@string/avatar"
                         app:layout_constraintBottom_toBottomOf="parent"
                         app:layout_constraintStart_toStartOf="parent"
                         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/fragment_room_detail.xml b/vector/src/main/res/layout/fragment_room_detail.xml
index 75b12a0621..2015c68828 100644
--- a/vector/src/main/res/layout/fragment_room_detail.xml
+++ b/vector/src/main/res/layout/fragment_room_detail.xml
@@ -28,6 +28,7 @@
                 android:layout_height="40dp"
                 android:layout_marginTop="8dp"
                 android:layout_marginBottom="8dp"
+                android:contentDescription="@string/avatar"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/fragment_room_preview_no_preview.xml b/vector/src/main/res/layout/fragment_room_preview_no_preview.xml
index 4760f5e04c..55dcc560e3 100644
--- a/vector/src/main/res/layout/fragment_room_preview_no_preview.xml
+++ b/vector/src/main/res/layout/fragment_room_preview_no_preview.xml
@@ -28,6 +28,7 @@
                     android:layout_height="40dp"
                     android:layout_marginTop="8dp"
                     android:layout_marginBottom="8dp"
+                    android:contentDescription="@string/avatar"
                     app:layout_constraintBottom_toBottomOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toTopOf="parent"
@@ -80,6 +81,7 @@
                     android:layout_width="128dp"
                     android:layout_height="128dp"
                     android:layout_marginTop="60dp"
+                    android:importantForAccessibility="no"
                     tools:src="@tools:sample/avatars" />
 
                 <TextView
diff --git a/vector/src/main/res/layout/fragment_room_setting_generic.xml b/vector/src/main/res/layout/fragment_room_setting_generic.xml
index 0028552e76..c11ce07062 100644
--- a/vector/src/main/res/layout/fragment_room_setting_generic.xml
+++ b/vector/src/main/res/layout/fragment_room_setting_generic.xml
@@ -28,6 +28,7 @@
                 android:layout_height="40dp"
                 android:layout_marginTop="8dp"
                 android:layout_marginBottom="8dp"
+                android:contentDescription="@string/avatar"
                 app:layout_constraintBottom_toBottomOf="parent"
                 app:layout_constraintStart_toStartOf="parent"
                 app:layout_constraintTop_toTopOf="parent"
@@ -54,9 +55,9 @@
     </androidx.appcompat.widget.Toolbar>
 
     <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:id="@+id/coordinatorLayout"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        android:id="@+id/coordinatorLayout"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/fragment_room_uploads.xml b/vector/src/main/res/layout/fragment_room_uploads.xml
index f837ff6483..2c29ebf708 100644
--- a/vector/src/main/res/layout/fragment_room_uploads.xml
+++ b/vector/src/main/res/layout/fragment_room_uploads.xml
@@ -7,12 +7,12 @@
     android:layout_height="match_parent">
 
     <com.google.android.material.appbar.AppBarLayout
-        style="@style/VectorAppBarLayoutStyle"
         android:id="@+id/roomUploadsAppBar"
-        android:transitionName="toolbar"
+        style="@style/VectorAppBarLayoutStyle"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:elevation="4dp">
+        android:elevation="4dp"
+        android:transitionName="toolbar">
 
         <androidx.appcompat.widget.Toolbar
             android:id="@+id/roomUploadsToolbar"
@@ -33,6 +33,7 @@
                     android:layout_height="40dp"
                     android:layout_marginTop="8dp"
                     android:layout_marginBottom="8dp"
+                    android:contentDescription="@string/avatar"
                     app:layout_constraintBottom_toBottomOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/fragment_room_widget.xml b/vector/src/main/res/layout/fragment_room_widget.xml
index f336f6b6e9..5fd66ffeda 100644
--- a/vector/src/main/res/layout/fragment_room_widget.xml
+++ b/vector/src/main/res/layout/fragment_room_widget.xml
@@ -35,6 +35,7 @@
             android:layout_width="40dp"
             android:layout_height="40dp"
             android:layout_gravity="center"
+            android:importantForAccessibility="no"
             android:src="@drawable/error" />
 
         <TextView
diff --git a/vector/src/main/res/layout/fragment_ssss_access_from_key.xml b/vector/src/main/res/layout/fragment_ssss_access_from_key.xml
index 8f8cd59eb1..66f0d36fdd 100644
--- a/vector/src/main/res/layout/fragment_ssss_access_from_key.xml
+++ b/vector/src/main/res/layout/fragment_ssss_access_from_key.xml
@@ -15,6 +15,7 @@
             android:layout_width="24dp"
             android:layout_height="24dp"
             android:layout_marginStart="16dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_security_key_24dp"
             app:layout_constraintBottom_toBottomOf="@+id/ssss_restore_with_key"
             app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/fragment_ssss_access_from_passphrase.xml b/vector/src/main/res/layout/fragment_ssss_access_from_passphrase.xml
index 13b6649993..6fb5d94994 100644
--- a/vector/src/main/res/layout/fragment_ssss_access_from_passphrase.xml
+++ b/vector/src/main/res/layout/fragment_ssss_access_from_passphrase.xml
@@ -15,6 +15,7 @@
             android:layout_width="24dp"
             android:layout_height="24dp"
             android:layout_marginStart="16dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_security_phrase_24dp"
             app:layout_constraintBottom_toBottomOf="@+id/ssss_restore_with_passphrase"
             app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/fragment_user_code_show.xml b/vector/src/main/res/layout/fragment_user_code_show.xml
index 39537fe6a5..6b92712d3a 100644
--- a/vector/src/main/res/layout/fragment_user_code_show.xml
+++ b/vector/src/main/res/layout/fragment_user_code_show.xml
@@ -27,6 +27,7 @@
                     android:id="@+id/showUserCodeClose"
                     android:layout_width="@dimen/layout_touch_size"
                     android:layout_height="@dimen/layout_touch_size"
+                    android:contentDescription="@string/action_close"
                     android:scaleType="center"
                     android:src="@drawable/ic_x_18dp"
                     app:layout_constraintBottom_toBottomOf="parent"
@@ -61,6 +62,7 @@
             android:layout_width="60dp"
             android:layout_height="60dp"
             android:layout_marginStart="@dimen/layout_horizontal_margin"
+            android:contentDescription="@string/avatar"
             android:elevation="4dp"
             android:transitionName="profile"
             app:layout_constraintBottom_toBottomOf="@id/showUserCodeCardTopBarrier"
diff --git a/vector/src/main/res/layout/fragment_user_directory.xml b/vector/src/main/res/layout/fragment_user_directory.xml
index 421023c22f..b99cc943ab 100644
--- a/vector/src/main/res/layout/fragment_user_directory.xml
+++ b/vector/src/main/res/layout/fragment_user_directory.xml
@@ -29,6 +29,7 @@
                     android:layout_width="@dimen/layout_touch_size"
                     android:layout_height="@dimen/layout_touch_size"
                     android:clickable="true"
+                    android:contentDescription="@string/action_close"
                     android:focusable="true"
                     android:foreground="?attr/selectableItemBackground"
                     android:scaleType="center"
diff --git a/vector/src/main/res/layout/fragment_user_list.xml b/vector/src/main/res/layout/fragment_user_list.xml
index b2bb9a909c..7414f6eda0 100644
--- a/vector/src/main/res/layout/fragment_user_list.xml
+++ b/vector/src/main/res/layout/fragment_user_list.xml
@@ -28,6 +28,7 @@
                     android:layout_width="@dimen/layout_touch_size"
                     android:layout_height="@dimen/layout_touch_size"
                     android:clickable="true"
+                    android:contentDescription="@string/action_close"
                     android:focusable="true"
                     android:foreground="?attr/selectableItemBackground"
                     android:scaleType="center"
diff --git a/vector/src/main/res/layout/item_attachment_big_preview.xml b/vector/src/main/res/layout/item_attachment_big_preview.xml
index e3fb89416e..a7db0f5c44 100644
--- a/vector/src/main/res/layout/item_attachment_big_preview.xml
+++ b/vector/src/main/res/layout/item_attachment_big_preview.xml
@@ -9,6 +9,7 @@
         android:id="@+id/attachmentBigImageView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
+        android:contentDescription="@string/a11y_image"
         tools:src="@tools:sample/backgrounds/scenic" />
 
 </FrameLayout>
\ No newline at end of file
diff --git a/vector/src/main/res/layout/item_autocomplete_matrix_item.xml b/vector/src/main/res/layout/item_autocomplete_matrix_item.xml
index 81eb084eb6..4fc7d45f07 100644
--- a/vector/src/main/res/layout/item_autocomplete_matrix_item.xml
+++ b/vector/src/main/res/layout/item_autocomplete_matrix_item.xml
@@ -13,6 +13,7 @@
         android:layout_width="28dp"
         android:layout_height="28dp"
         android:layout_gravity="center_vertical"
+        android:importantForAccessibility="no"
         tools:src="@tools:sample/avatars" />
 
     <LinearLayout
diff --git a/vector/src/main/res/layout/item_bottom_sheet_action.xml b/vector/src/main/res/layout/item_bottom_sheet_action.xml
index 7456f50670..f05d1bb1fc 100644
--- a/vector/src/main/res/layout/item_bottom_sheet_action.xml
+++ b/vector/src/main/res/layout/item_bottom_sheet_action.xml
@@ -30,6 +30,7 @@
         android:layout_height="26dp"
         android:layout_marginEnd="16dp"
         android:layout_toEndOf="@id/actionStartSpace"
+        android:importantForAccessibility="no"
         android:scaleType="center"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/actionTitleContainer"
diff --git a/vector/src/main/res/layout/item_bottom_sheet_room_preview.xml b/vector/src/main/res/layout/item_bottom_sheet_room_preview.xml
index fbd7e45d4f..ce3e9bd879 100644
--- a/vector/src/main/res/layout/item_bottom_sheet_room_preview.xml
+++ b/vector/src/main/res/layout/item_bottom_sheet_room_preview.xml
@@ -61,11 +61,11 @@
         android:layout_width="48dp"
         android:layout_height="48dp"
         android:background="?attr/selectableItemBackground"
+        android:contentDescription="@string/room_list_quick_actions_favorite_add"
         android:scaleType="centerInside"
         app:layout_constraintBottom_toBottomOf="@+id/bottomSheetRoomPreviewAvatar"
         app:layout_constraintEnd_toStartOf="@+id/bottomSheetRoomPreviewSettings"
         app:layout_constraintTop_toTopOf="@id/bottomSheetRoomPreviewAvatar"
-        tools:contentDescription="@string/room_list_quick_actions_favorite_add"
         tools:src="@drawable/ic_star_24dp"
         tools:tint="?riotx_text_secondary" />
 
diff --git a/vector/src/main/res/layout/item_contact_action.xml b/vector/src/main/res/layout/item_contact_action.xml
index 7a9a751257..837d66c633 100644
--- a/vector/src/main/res/layout/item_contact_action.xml
+++ b/vector/src/main/res/layout/item_contact_action.xml
@@ -15,6 +15,7 @@
         android:layout_height="44dp"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp"
+        android:importantForAccessibility="no"
         android:padding="10dp"
         app:tint="?riotx_text_secondary"
         tools:src="@drawable/ic_invite_people" />
diff --git a/vector/src/main/res/layout/item_contact_main.xml b/vector/src/main/res/layout/item_contact_main.xml
index e9a07274b3..8db2080b47 100644
--- a/vector/src/main/res/layout/item_contact_main.xml
+++ b/vector/src/main/res/layout/item_contact_main.xml
@@ -14,6 +14,7 @@
         android:id="@+id/contactAvatar"
         android:layout_width="48dp"
         android:layout_height="48dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/item_create_direct_room_user.xml b/vector/src/main/res/layout/item_create_direct_room_user.xml
index 108c02cd02..59ae13602a 100644
--- a/vector/src/main/res/layout/item_create_direct_room_user.xml
+++ b/vector/src/main/res/layout/item_create_direct_room_user.xml
@@ -24,6 +24,7 @@
             android:id="@+id/createDirectRoomUserAvatar"
             android:layout_width="40dp"
             android:layout_height="40dp"
+            android:contentDescription="@string/avatar"
             tools:src="@tools:sample/avatars" />
 
         <ImageView
diff --git a/vector/src/main/res/layout/item_display_read_receipt.xml b/vector/src/main/res/layout/item_display_read_receipt.xml
index c78aaaed2b..7058b8b86f 100644
--- a/vector/src/main/res/layout/item_display_read_receipt.xml
+++ b/vector/src/main/res/layout/item_display_read_receipt.xml
@@ -16,6 +16,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:layout_marginEnd="8dp"
+        android:contentDescription="@string/avatar"
         tools:src="@tools:sample/avatars" />
 
     <TextView
diff --git a/vector/src/main/res/layout/item_editable_avatar.xml b/vector/src/main/res/layout/item_editable_avatar.xml
index 8b1826dbe2..654787384f 100644
--- a/vector/src/main/res/layout/item_editable_avatar.xml
+++ b/vector/src/main/res/layout/item_editable_avatar.xml
@@ -14,6 +14,7 @@
         android:layout_width="128dp"
         android:layout_height="128dp"
         android:background="@drawable/header_panel_round_background"
+        android:contentDescription="@string/a11y_change_avatar"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -23,12 +24,14 @@
             android:layout_width="48dp"
             android:layout_height="48dp"
             android:layout_gravity="center"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_add_image" />
 
         <ImageView
             android:id="@+id/itemEditableAvatarImage"
             android:layout_width="128dp"
             android:layout_height="128dp"
+            android:importantForAccessibility="no"
             android:scaleType="center"
             tools:alpha="0.3"
             tools:src="@tools:sample/avatars" />
@@ -40,6 +43,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:background="@drawable/header_panel_round_background"
+        android:contentDescription="@string/a11y_delete_avatar"
         android:scaleType="center"
         android:src="@drawable/ic_delete"
         android:visibility="gone"
diff --git a/vector/src/main/res/layout/item_emoji_verif.xml b/vector/src/main/res/layout/item_emoji_verif.xml
index ff883e6de1..004ee36fe9 100644
--- a/vector/src/main/res/layout/item_emoji_verif.xml
+++ b/vector/src/main/res/layout/item_emoji_verif.xml
@@ -15,21 +15,22 @@
         android:layout_gravity="center"
         android:textColor="@color/black"
         android:textSize="40dp"
-        tools:visibility="gone"
         tools:ignore="SpUsage"
-        tools:text="🌵" />
+        tools:text="🌵"
+        tools:visibility="gone" />
 
     <ImageView
         android:id="@+id/item_emoji_image"
         android:layout_width="54dp"
-        android:layout_margin="2dp"
         android:layout_height="54dp"
         android:layout_gravity="center"
+        android:layout_margin="2dp"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_verification_cactus"
-        tools:visibility="visible"
         android:visibility="gone"
         tools:ignore="SpUsage"
-        tools:text="🌵" />
+        tools:text="🌵"
+        tools:visibility="visible" />
 
     <TextView
         android:id="@+id/item_emoji_name_tv"
diff --git a/vector/src/main/res/layout/item_expandable_textview.xml b/vector/src/main/res/layout/item_expandable_textview.xml
index 4dc7085737..d0520d2dba 100644
--- a/vector/src/main/res/layout/item_expandable_textview.xml
+++ b/vector/src/main/res/layout/item_expandable_textview.xml
@@ -27,6 +27,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginTop="4dp"
+        android:contentDescription="@string/merged_events_expand"
         android:src="@drawable/ic_expand_more"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/item_generic_list.xml b/vector/src/main/res/layout/item_generic_list.xml
index f89413f15f..dabf2ade97 100644
--- a/vector/src/main/res/layout/item_generic_list.xml
+++ b/vector/src/main/res/layout/item_generic_list.xml
@@ -12,6 +12,7 @@
         android:layout_width="20dp"
         android:layout_height="20dp"
         android:layout_marginStart="16dp"
+        android:importantForAccessibility="no"
         android:scaleType="centerInside"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="@id/item_generic_title_text"
@@ -72,6 +73,7 @@
         android:layout_width="20dp"
         android:layout_height="20dp"
         android:layout_margin="16dp"
+        android:importantForAccessibility="no"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="@+id/item_generic_description_text"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/item_generic_with_value.xml b/vector/src/main/res/layout/item_generic_with_value.xml
index 6fd45fa2ae..97ecb9cfa6 100644
--- a/vector/src/main/res/layout/item_generic_with_value.xml
+++ b/vector/src/main/res/layout/item_generic_with_value.xml
@@ -3,29 +3,29 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:orientation="horizontal"
-    android:gravity="center"
     android:foreground="?attr/selectableItemBackground"
+    android:gravity="center"
+    android:minHeight="40dp"
+    android:orientation="horizontal"
     android:paddingStart="@dimen/layout_horizontal_margin"
-    android:paddingEnd="@dimen/layout_horizontal_margin"
-    android:minHeight="40dp">
+    android:paddingEnd="@dimen/layout_horizontal_margin">
 
     <ImageView
         android:id="@+id/itemGenericWithValueTitleIcon"
         android:layout_width="20sp"
         android:layout_height="20sp"
-        android:src="@drawable/ic_shield_trusted"
-        />
+        android:importantForAccessibility="no"
+        android:src="@drawable/ic_shield_trusted" />
 
     <TextView
         android:id="@+id/itemGenericWithValueLabelText"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:textSize="16sp"
-        android:textColor="?riotx_text_primary"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="0dp"
         android:layout_weight="1"
+        android:textColor="?riotx_text_primary"
+        android:textSize="16sp"
         tools:text="Label" />
 
 
@@ -33,12 +33,12 @@
         android:id="@+id/itemGenericWithValueValueText"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:textSize="15sp"
-        android:textColor="?riotx_text_primary"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="0dp"
-        tools:textColor="@color/riotx_positive_accent"
-        tools:text="Value" />
+        android:textColor="?riotx_text_primary"
+        android:textSize="15sp"
+        tools:text="Value"
+        tools:textColor="@color/riotx_positive_accent" />
 
 
 </LinearLayout>
\ No newline at end of file
diff --git a/vector/src/main/res/layout/item_group.xml b/vector/src/main/res/layout/item_group.xml
index d99c990cc7..6c2721ff33 100644
--- a/vector/src/main/res/layout/item_group.xml
+++ b/vector/src/main/res/layout/item_group.xml
@@ -16,6 +16,7 @@
         android:layout_height="42dp"
         android:layout_gravity="center"
         android:layout_marginStart="@dimen/layout_horizontal_margin"
+        android:contentDescription="@string/avatar"
         android:duplicateParentState="true"
         app:layout_constraintBottom_toTopOf="@+id/groupBottomSeparator"
         app:layout_constraintStart_toStartOf="parent"
@@ -44,6 +45,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginEnd="21dp"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_arrow_right"
         app:layout_constraintBottom_toTopOf="@+id/groupBottomSeparator"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/item_help_footer.xml b/vector/src/main/res/layout/item_help_footer.xml
index 9ea25d99c8..6dc253fb2c 100644
--- a/vector/src/main/res/layout/item_help_footer.xml
+++ b/vector/src/main/res/layout/item_help_footer.xml
@@ -11,6 +11,7 @@
         android:id="@+id/itemHelpPicto"
         android:layout_width="32dp"
         android:layout_height="32dp"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_idea"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/itemHelpText"
diff --git a/vector/src/main/res/layout/item_known_user.xml b/vector/src/main/res/layout/item_known_user.xml
index c539aaba2e..d5a61e2a40 100644
--- a/vector/src/main/res/layout/item_known_user.xml
+++ b/vector/src/main/res/layout/item_known_user.xml
@@ -24,6 +24,7 @@
             android:id="@+id/knownUserAvatar"
             android:layout_width="40dp"
             android:layout_height="40dp"
+            android:contentDescription="@string/avatar"
             tools:src="@tools:sample/avatars" />
 
         <ImageView
diff --git a/vector/src/main/res/layout/item_notification_troubleshoot.xml b/vector/src/main/res/layout/item_notification_troubleshoot.xml
index 507b936d20..018c71fbb8 100644
--- a/vector/src/main/res/layout/item_notification_troubleshoot.xml
+++ b/vector/src/main/res/layout/item_notification_troubleshoot.xml
@@ -13,6 +13,7 @@
         android:layout_width="20dp"
         android:layout_height="20dp"
         android:layout_margin="16dp"
+        android:importantForAccessibility="no"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/item_profile_action.xml b/vector/src/main/res/layout/item_profile_action.xml
index c928a5f59b..02396e46f1 100644
--- a/vector/src/main/res/layout/item_profile_action.xml
+++ b/vector/src/main/res/layout/item_profile_action.xml
@@ -19,6 +19,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_centerVertical="true"
+        android:importantForAccessibility="no"
         android:scaleType="center"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
@@ -70,12 +71,13 @@
         android:id="@+id/actionSecondaryAccessory"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        tools:src="@drawable/ic_shield_warning"
         android:layout_marginEnd="8dp"
+        android:importantForAccessibility="no"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/actionEditable"
         app:layout_constraintTop_toTopOf="parent"
+        tools:src="@drawable/ic_shield_warning"
         tools:visibility="visible" />
 
 
@@ -83,13 +85,14 @@
         android:id="@+id/actionEditable"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_arrow_right"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        tools:visibility="visible"
         app:tint="?riotx_text_secondary"
-        tools:ignore="MissingPrefix" />
+        tools:ignore="MissingPrefix"
+        tools:visibility="visible" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/vector/src/main/res/layout/item_profile_matrix_item.xml b/vector/src/main/res/layout/item_profile_matrix_item.xml
index f35141576c..86c0d4a035 100644
--- a/vector/src/main/res/layout/item_profile_matrix_item.xml
+++ b/vector/src/main/res/layout/item_profile_matrix_item.xml
@@ -19,6 +19,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:layout_centerVertical="true"
+        android:contentDescription="@string/avatar"
         android:scaleType="centerInside"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -79,6 +80,7 @@
         android:id="@+id/matrixItemEditable"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_arrow_right"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/item_profile_matrix_item_progress.xml b/vector/src/main/res/layout/item_profile_matrix_item_progress.xml
index 69e4b40bb4..23e3edda87 100644
--- a/vector/src/main/res/layout/item_profile_matrix_item_progress.xml
+++ b/vector/src/main/res/layout/item_profile_matrix_item_progress.xml
@@ -19,6 +19,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:layout_centerVertical="true"
+        android:contentDescription="@string/avatar"
         android:scaleType="centerInside"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -91,13 +92,14 @@
         android:id="@+id/matrixItemEditable"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_arrow_right"
         android:visibility="visible"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        tools:visibility="visible"
         app:tint="?riotx_text_secondary"
-        tools:ignore="MissingPrefix" />
+        tools:ignore="MissingPrefix"
+        tools:visibility="visible" />
 
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/vector/src/main/res/layout/item_public_room.xml b/vector/src/main/res/layout/item_public_room.xml
index bb9d379f31..a65115e1da 100644
--- a/vector/src/main/res/layout/item_public_room.xml
+++ b/vector/src/main/res/layout/item_public_room.xml
@@ -17,6 +17,7 @@
         android:layout_width="56dp"
         android:layout_height="56dp"
         android:layout_marginStart="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintBottom_toTopOf="@+id/itemPublicRoomBottomSeparator"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
@@ -70,12 +71,12 @@
         android:minWidth="56dp"
         android:textColor="?riotx_text_secondary"
         android:textSize="15sp"
+        app:drawableStartCompat="@drawable/ic_user"
+        app:drawableTint="?riotx_text_secondary"
         app:layout_constraintBottom_toTopOf="@+id/itemPublicRoomBottomSeparator"
         app:layout_constraintStart_toStartOf="@+id/itemPublicRoomName"
         app:layout_constraintTop_toBottomOf="@+id/itemPublicRoomTopic"
-        tools:text="148"
-        app:drawableTint="?riotx_text_secondary"
-        app:drawableStartCompat="@drawable/ic_user" />
+        tools:text="148" />
 
     <TextView
         android:id="@+id/itemPublicRoomAlias"
diff --git a/vector/src/main/res/layout/item_room.xml b/vector/src/main/res/layout/item_room.xml
index cdbcaf5757..cdf556aa92 100644
--- a/vector/src/main/res/layout/item_room.xml
+++ b/vector/src/main/res/layout/item_room.xml
@@ -34,6 +34,7 @@
             android:id="@+id/roomAvatarImageView"
             android:layout_width="56dp"
             android:layout_height="56dp"
+            android:contentDescription="@string/avatar"
             tools:src="@tools:sample/avatars" />
 
         <ImageView
@@ -52,6 +53,7 @@
         android:id="@+id/roomAvatarFailSendingImageView"
         android:layout_width="16dp"
         android:layout_height="16dp"
+        android:contentDescription="@string/a11y_error_some_message_not_sent"
         android:src="@drawable/ic_warning_badge"
         app:layout_constraintCircle="@id/roomAvatarContainer"
         app:layout_constraintCircleAngle="45"
@@ -104,15 +106,16 @@
         android:layout_height="16dp"
         android:layout_marginStart="4dp"
         android:layout_marginEnd="4dp"
+        android:contentDescription="@string/a11y_unsent_draft"
         android:src="@drawable/ic_edit"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="@+id/roomNameView"
         app:layout_constraintEnd_toStartOf="@+id/roomUnreadCounterBadgeView"
         app:layout_constraintStart_toEndOf="@+id/roomNameView"
         app:layout_constraintTop_toTopOf="@+id/roomNameView"
-        tools:visibility="visible"
         app:tint="?riotx_text_primary"
-        tools:ignore="MissingPrefix" />
+        tools:ignore="MissingPrefix"
+        tools:visibility="visible" />
 
     <im.vector.app.features.home.room.list.UnreadCounterBadgeView
         android:id="@+id/roomUnreadCounterBadgeView"
diff --git a/vector/src/main/res/layout/item_room_directory.xml b/vector/src/main/res/layout/item_room_directory.xml
index 4add2d566d..391f52ad92 100644
--- a/vector/src/main/res/layout/item_room_directory.xml
+++ b/vector/src/main/res/layout/item_room_directory.xml
@@ -19,6 +19,7 @@
         android:layout_marginTop="4dp"
         android:layout_marginBottom="4dp"
         android:background="@drawable/circle"
+        android:contentDescription="@string/avatar"
         android:padding="8dp"
         app:layout_constraintBottom_toTopOf="@+id/itemRoomDirectoryBottomSeparator"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/item_room_invitation.xml b/vector/src/main/res/layout/item_room_invitation.xml
index 82b30991c7..2654fb6997 100644
--- a/vector/src/main/res/layout/item_room_invitation.xml
+++ b/vector/src/main/res/layout/item_room_invitation.xml
@@ -16,6 +16,7 @@
         android:layout_height="56dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="12dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:src="@tools:sample/avatars" />
@@ -42,14 +43,14 @@
         android:maxLines="1"
         android:textColor="?riotx_text_primary"
         android:textSize="15sp"
+        app:drawableEndCompat="@drawable/ic_arrow_right"
         app:layout_constrainedWidth="true"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.0"
         app:layout_constraintHorizontal_chainStyle="packed"
         app:layout_constraintStart_toEndOf="@id/roomInvitationAvatarImageView"
         app:layout_constraintTop_toTopOf="parent"
-        tools:text="@sample/matrix.json/data/displayName"
-        app:drawableEndCompat="@drawable/ic_arrow_right" />
+        tools:text="@sample/matrix.json/data/displayName" />
 
     <TextView
         android:id="@+id/roomInvitationSubTitle"
diff --git a/vector/src/main/res/layout/item_room_widget.xml b/vector/src/main/res/layout/item_room_widget.xml
index e87e4c70a5..d86fa2d1cf 100644
--- a/vector/src/main/res/layout/item_room_widget.xml
+++ b/vector/src/main/res/layout/item_room_widget.xml
@@ -16,6 +16,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:layout_marginEnd="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/item_search_result.xml b/vector/src/main/res/layout/item_search_result.xml
index 73f949f777..3e89ab4ba4 100644
--- a/vector/src/main/res/layout/item_search_result.xml
+++ b/vector/src/main/res/layout/item_search_result.xml
@@ -12,6 +12,7 @@
         android:layout_height="44dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="4dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:src="@tools:sample/avatars" />
diff --git a/vector/src/main/res/layout/item_settings_three_pid.xml b/vector/src/main/res/layout/item_settings_three_pid.xml
index 0040840ce9..03d0c9d988 100644
--- a/vector/src/main/res/layout/item_settings_three_pid.xml
+++ b/vector/src/main/res/layout/item_settings_three_pid.xml
@@ -14,6 +14,7 @@
         android:layout_width="16dp"
         android:layout_height="16dp"
         android:layout_marginEnd="8dp"
+        android:importantForAccessibility="no"
         android:scaleType="center"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/item_settings_three_pid_title"
@@ -40,6 +41,7 @@
         android:id="@+id/item_settings_three_pid_delete"
         android:layout_width="@dimen/layout_touch_size"
         android:layout_height="@dimen/layout_touch_size"
+        android:contentDescription="@string/delete"
         android:scaleType="center"
         android:src="@drawable/ic_trash_24"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/vector/src/main/res/layout/item_timeline_event_base.xml b/vector/src/main/res/layout/item_timeline_event_base.xml
index cfde244217..68f59b103b 100644
--- a/vector/src/main/res/layout/item_timeline_event_base.xml
+++ b/vector/src/main/res/layout/item_timeline_event_base.xml
@@ -21,6 +21,7 @@
         android:layout_height="44dp"
         android:layout_marginStart="8dp"
         android:layout_marginTop="4dp"
+        android:contentDescription="@string/avatar"
         tools:src="@tools:sample/avatars" />
 
     <TextView
diff --git a/vector/src/main/res/layout/item_timeline_event_call_tile_stub.xml b/vector/src/main/res/layout/item_timeline_event_call_tile_stub.xml
index 9eac9cd6c3..78d0d4458d 100644
--- a/vector/src/main/res/layout/item_timeline_event_call_tile_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_call_tile_stub.xml
@@ -1,25 +1,26 @@
 <?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:orientation="vertical">
 
     <ImageView
         android:id="@+id/itemCallCreatorAvatar"
         android:layout_width="40dp"
         android:layout_height="40dp"
-        tools:src="@tools:sample/avatars"
-        android:layout_gravity="center_horizontal" />
+        android:layout_gravity="center_horizontal"
+        android:contentDescription="@string/avatar"
+        tools:src="@tools:sample/avatars" />
 
     <TextView
         android:id="@+id/itemCallCreatorNameTextView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_gravity="center_horizontal"
-        android:drawablePadding="6dp"
         android:layout_marginTop="4dp"
+        android:drawablePadding="6dp"
         android:gravity="center"
         android:textColor="?riotx_text_primary"
         android:textSize="15sp"
@@ -33,10 +34,10 @@
         android:layout_height="wrap_content"
         android:layout_gravity="center"
         android:layout_marginStart="8dp"
-        android:layout_marginEnd="8dp"
         android:layout_marginTop="4dp"
-        android:drawablePadding="4dp"
+        android:layout_marginEnd="8dp"
         android:layout_marginBottom="12dp"
+        android:drawablePadding="4dp"
         android:gravity="center"
         android:textColor="?riotx_text_primary"
         android:textSize="12sp"
@@ -63,11 +64,11 @@
 
         <Button
             android:id="@+id/itemCallAcceptView"
+            style="@style/VectorButtonStylePositive"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginStart="4dp"
             android:minWidth="120dp"
-            style="@style/VectorButtonStylePositive"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintHorizontal_chainStyle="packed"
             app:layout_constraintStart_toEndOf="@+id/itemCallRejectView"
@@ -75,16 +76,16 @@
 
         <Button
             android:id="@+id/itemCallRejectView"
+            style="@style/VectorButtonStyleDestructive"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_marginTop="16dp"
             android:layout_marginEnd="4dp"
             android:minWidth="120dp"
-            style="@style/VectorButtonStyleDestructive"
             app:layout_constraintEnd_toStartOf="@+id/itemCallAcceptView"
             app:layout_constraintHorizontal_chainStyle="packed"
-            app:layout_constraintTop_toTopOf="parent"
-            app:layout_constraintStart_toStartOf="parent" />
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
 
 
     </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/vector/src/main/res/layout/item_timeline_event_default_stub.xml b/vector/src/main/res/layout/item_timeline_event_default_stub.xml
index 68c8936b32..01b6e63aaa 100644
--- a/vector/src/main/res/layout/item_timeline_event_default_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_default_stub.xml
@@ -10,6 +10,7 @@
         android:id="@+id/itemDefaultAvatarView"
         android:layout_width="24dp"
         android:layout_height="24dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:srcCompat="@tools:sample/avatars" />
diff --git a/vector/src/main/res/layout/item_timeline_event_media_message_stub.xml b/vector/src/main/res/layout/item_timeline_event_media_message_stub.xml
index ba4b4f64d7..42bae56238 100644
--- a/vector/src/main/res/layout/item_timeline_event_media_message_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_media_message_stub.xml
@@ -10,6 +10,7 @@
         android:layout_width="375dp"
         android:layout_height="0dp"
         android:layout_marginEnd="32dp"
+        android:contentDescription="@string/a11y_image"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0"
         app:layout_constraintStart_toStartOf="parent"
@@ -41,6 +42,7 @@
         android:id="@+id/messageMediaPlayView"
         android:layout_width="40dp"
         android:layout_height="40dp"
+        android:contentDescription="@string/play_video"
         android:src="@drawable/ic_material_play_circle"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="@id/messageThumbnailView"
diff --git a/vector/src/main/res/layout/item_timeline_event_merged_room_creation_stub.xml b/vector/src/main/res/layout/item_timeline_event_merged_room_creation_stub.xml
index 728b90b696..b9c5f039e9 100644
--- a/vector/src/main/res/layout/item_timeline_event_merged_room_creation_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_merged_room_creation_stub.xml
@@ -32,6 +32,7 @@
             android:layout_width="60dp"
             android:layout_height="60dp"
             android:layout_marginTop="20dp"
+            android:importantForAccessibility="no"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toBottomOf="@id/creationEncryptionTile"
             tools:srcCompat="@tools:sample/avatars" />
@@ -151,6 +152,7 @@
             android:layout_height="24dp"
             android:layout_alignParentStart="true"
             android:layout_centerVertical="true"
+            android:contentDescription="@string/avatar"
             tools:srcCompat="@tools:sample/avatars" />
 
         <TextView
diff --git a/vector/src/main/res/layout/item_timeline_event_notice_stub.xml b/vector/src/main/res/layout/item_timeline_event_notice_stub.xml
index 9aacf357f1..530a72351a 100644
--- a/vector/src/main/res/layout/item_timeline_event_notice_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_notice_stub.xml
@@ -10,6 +10,7 @@
         android:id="@+id/itemNoticeAvatarView"
         android:layout_width="24dp"
         android:layout_height="24dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:srcCompat="@tools:sample/avatars" />
diff --git a/vector/src/main/res/layout/item_timeline_event_poll_stub.xml b/vector/src/main/res/layout/item_timeline_event_poll_stub.xml
index 598b7d2dc1..347e5f1590 100644
--- a/vector/src/main/res/layout/item_timeline_event_poll_stub.xml
+++ b/vector/src/main/res/layout/item_timeline_event_poll_stub.xml
@@ -16,6 +16,7 @@
             android:layout_height="wrap_content"
             android:layout_gravity="center"
             android:layout_margin="4dp"
+            android:importantForAccessibility="no"
             android:src="@drawable/ic_poll"
             app:tint="@color/riotx_accent"
             tools:ignore="MissingPrefix" />
diff --git a/vector/src/main/res/layout/item_tos.xml b/vector/src/main/res/layout/item_tos.xml
index b3387991b2..f32e63a190 100644
--- a/vector/src/main/res/layout/item_tos.xml
+++ b/vector/src/main/res/layout/item_tos.xml
@@ -44,6 +44,7 @@
         android:id="@+id/term_policy_arrow"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:importantForAccessibility="no"
         android:rotationY="@integer/rtl_mirror_flip"
         android:src="@drawable/ic_material_chevron_right_black"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/vector/src/main/res/layout/item_unknown_room.xml b/vector/src/main/res/layout/item_unknown_room.xml
index a097767e63..4387577d51 100644
--- a/vector/src/main/res/layout/item_unknown_room.xml
+++ b/vector/src/main/res/layout/item_unknown_room.xml
@@ -17,6 +17,7 @@
         android:layout_width="56dp"
         android:layout_height="56dp"
         android:layout_marginStart="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintBottom_toTopOf="@+id/itemPublicRoomBottomSeparator"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/item_uploads_file.xml b/vector/src/main/res/layout/item_uploads_file.xml
index 5c40327d95..12b883e249 100644
--- a/vector/src/main/res/layout/item_uploads_file.xml
+++ b/vector/src/main/res/layout/item_uploads_file.xml
@@ -12,6 +12,7 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="@dimen/layout_horizontal_margin"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_file"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
@@ -54,6 +55,7 @@
         android:id="@+id/uploadsFileActionDownload"
         android:layout_width="@dimen/layout_touch_size"
         android:layout_height="@dimen/layout_touch_size"
+        android:contentDescription="@string/download"
         android:scaleType="center"
         android:src="@drawable/ic_download"
         app:layout_constraintBottom_toBottomOf="parent"
@@ -67,6 +69,7 @@
         android:layout_width="@dimen/layout_touch_size"
         android:layout_height="@dimen/layout_touch_size"
         android:layout_marginEnd="@dimen/layout_horizontal_margin"
+        android:contentDescription="@string/share"
         android:scaleType="center"
         android:src="@drawable/ic_material_share"
         app:layout_constraintBottom_toBottomOf="parent"
diff --git a/vector/src/main/res/layout/item_uploads_image.xml b/vector/src/main/res/layout/item_uploads_image.xml
index 464816d74a..a4dbb5fd48 100644
--- a/vector/src/main/res/layout/item_uploads_image.xml
+++ b/vector/src/main/res/layout/item_uploads_image.xml
@@ -11,6 +11,7 @@
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:layout_margin="2dp"
+        android:contentDescription="@string/a11y_image"
         android:scaleType="center"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintDimensionRatio="H,1:1"
diff --git a/vector/src/main/res/layout/item_uploads_video.xml b/vector/src/main/res/layout/item_uploads_video.xml
index 97d7529c13..e33a1acee0 100644
--- a/vector/src/main/res/layout/item_uploads_video.xml
+++ b/vector/src/main/res/layout/item_uploads_video.xml
@@ -11,6 +11,7 @@
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:layout_margin="2dp"
+        android:contentDescription="@string/a11y_video"
         android:scaleType="center"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintDimensionRatio="H,1:1"
@@ -22,6 +23,7 @@
     <ImageView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:contentDescription="@string/play_video"
         android:src="@drawable/ic_material_play_circle"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/item_user.xml b/vector/src/main/res/layout/item_user.xml
index 20e339528a..2300036beb 100644
--- a/vector/src/main/res/layout/item_user.xml
+++ b/vector/src/main/res/layout/item_user.xml
@@ -16,6 +16,7 @@
         android:layout_width="40dp"
         android:layout_height="40dp"
         android:layout_marginStart="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
         tools:src="@tools:sample/avatars" />
diff --git a/vector/src/main/res/layout/item_verification_action.xml b/vector/src/main/res/layout/item_verification_action.xml
index 68ee392cff..ad2e0df51e 100644
--- a/vector/src/main/res/layout/item_verification_action.xml
+++ b/vector/src/main/res/layout/item_verification_action.xml
@@ -19,6 +19,7 @@
         android:id="@+id/itemVerificationLeftIcon"
         android:layout_width="48dp"
         android:layout_height="48dp"
+        android:importantForAccessibility="no"
         android:scaleType="center"
         android:visibility="gone"
         app:layout_constraintBottom_toBottomOf="parent"
@@ -66,6 +67,7 @@
         android:id="@+id/itemVerificationActionIcon"
         android:layout_width="48dp"
         android:layout_height="48dp"
+        android:importantForAccessibility="no"
         android:scaleType="center"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/item_verification_wait.xml b/vector/src/main/res/layout/item_verification_wait.xml
index 675af87cbf..b3cc8fdf72 100644
--- a/vector/src/main/res/layout/item_verification_wait.xml
+++ b/vector/src/main/res/layout/item_verification_wait.xml
@@ -27,6 +27,7 @@
         android:layout_width="40dp"
         android:layout_height="40dp"
         android:layout_marginTop="16dp"
+        android:importantForAccessibility="no"
         android:scaleType="fitCenter"
         android:src="@drawable/ic_monitor"
         app:layout_constraintEnd_toStartOf="@id/smartphoneIcon"
@@ -40,6 +41,7 @@
         android:layout_width="40dp"
         android:layout_height="40dp"
         android:layout_marginTop="16dp"
+        android:importantForAccessibility="no"
         android:scaleType="fitCenter"
         android:src="@drawable/ic_smartphone"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/vector_invite_view.xml b/vector/src/main/res/layout/vector_invite_view.xml
index 159e394426..3028fb7953 100644
--- a/vector/src/main/res/layout/vector_invite_view.xml
+++ b/vector/src/main/res/layout/vector_invite_view.xml
@@ -13,6 +13,7 @@
         android:layout_marginStart="8dp"
         android:layout_marginTop="86dp"
         android:layout_marginEnd="8dp"
+        android:contentDescription="@string/avatar"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
diff --git a/vector/src/main/res/layout/view_bottom_sheet_action_button.xml b/vector/src/main/res/layout/view_bottom_sheet_action_button.xml
index ec2e7d2bfe..c563ad63db 100644
--- a/vector/src/main/res/layout/view_bottom_sheet_action_button.xml
+++ b/vector/src/main/res/layout/view_bottom_sheet_action_button.xml
@@ -24,6 +24,7 @@
             android:id="@+id/bottomSheetActionLeftIcon"
             android:layout_width="48dp"
             android:layout_height="48dp"
+            android:importantForAccessibility="no"
             android:scaleType="center"
             android:visibility="gone"
             app:layout_constraintBottom_toBottomOf="parent"
@@ -71,6 +72,7 @@
             android:id="@+id/bottomSheetActionIcon"
             android:layout_width="48dp"
             android:layout_height="48dp"
+            android:importantForAccessibility="no"
             android:scaleType="center"
             app:layout_constraintBottom_toBottomOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/view_call_controls.xml b/vector/src/main/res/layout/view_call_controls.xml
index 81684cafea..e1d3d67776 100644
--- a/vector/src/main/res/layout/view_call_controls.xml
+++ b/vector/src/main/res/layout/view_call_controls.xml
@@ -45,9 +45,9 @@
         <androidx.constraintlayout.helper.widget.Flow
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            app:flow_horizontalStyle="packed"
-            app:flow_horizontalGap="48dp"
             app:constraint_referenced_ids="ringingControlDecline, ringingControlAccept"
+            app:flow_horizontalGap="48dp"
+            app:flow_horizontalStyle="packed"
             tools:ignore="MissingConstraints" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
@@ -69,11 +69,11 @@
             android:id="@+id/openChatIcon"
             android:layout_width="@dimen/layout_touch_size"
             android:layout_height="@dimen/layout_touch_size"
-            android:scaleType="center"
-            android:clickable="true"
             android:background="@drawable/bg_rounded_button"
+            android:clickable="true"
             android:contentDescription="@string/a11y_open_chat"
             android:focusable="true"
+            android:scaleType="center"
             android:src="@drawable/ic_call_pip"
             app:tint="@android:color/white"
             tools:ignore="MissingConstraints,MissingPrefix" />
@@ -84,12 +84,12 @@
             android:layout_height="56dp"
             android:background="@drawable/bg_rounded_button"
             android:clickable="true"
+            android:contentDescription="@string/a11y_mute_microphone"
             android:focusable="true"
             android:padding="16dp"
             android:src="@drawable/ic_microphone_off"
             app:backgroundTint="?attr/riotx_background"
             app:tint="?attr/riotx_text_primary"
-            tools:contentDescription="@string/a11y_mute_microphone"
             tools:ignore="MissingConstraints,MissingPrefix" />
 
         <ImageView
@@ -112,23 +112,23 @@
             android:layout_height="56dp"
             android:background="@drawable/bg_rounded_button"
             android:clickable="true"
+            android:contentDescription="@string/a11y_stop_camera"
             android:focusable="true"
             android:padding="16dp"
             android:src="@drawable/ic_call_videocam_off_default"
             app:backgroundTint="?attr/riotx_background"
             app:tint="?attr/riotx_text_primary"
-            tools:contentDescription="@string/a11y_stop_camera"
             tools:ignore="MissingConstraints,MissingPrefix" />
 
         <ImageView
             android:id="@+id/moreIcon"
             android:layout_width="@dimen/layout_touch_size"
             android:layout_height="@dimen/layout_touch_size"
-            android:scaleType="center"
-            android:clickable="true"
             android:background="@drawable/bg_rounded_button"
+            android:clickable="true"
             android:contentDescription="@string/settings"
             android:focusable="true"
+            android:scaleType="center"
             android:src="@drawable/ic_more_horizontal"
             app:tint="@android:color/white"
             tools:ignore="MissingConstraints,MissingPrefix" />
@@ -136,9 +136,9 @@
         <androidx.constraintlayout.helper.widget.Flow
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            app:constraint_referenced_ids="openChatIcon, muteIcon, endCallIcon,videoToggleIcon,moreIcon"
             app:flow_horizontalGap="16dp"
             app:flow_horizontalStyle="packed"
-            app:constraint_referenced_ids="openChatIcon, muteIcon, endCallIcon,videoToggleIcon,moreIcon"
             tools:ignore="MissingConstraints" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/vector/src/main/res/layout/view_keys_backup_banner.xml b/vector/src/main/res/layout/view_keys_backup_banner.xml
index 7cd3f3d954..861a5b0222 100644
--- a/vector/src/main/res/layout/view_keys_backup_banner.xml
+++ b/vector/src/main/res/layout/view_keys_backup_banner.xml
@@ -13,6 +13,7 @@
         android:layout_width="32dp"
         android:layout_height="32dp"
         android:layout_marginStart="19dp"
+        android:importantForAccessibility="no"
         android:src="@drawable/ic_secure_backup"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/view_notification_area.xml b/vector/src/main/res/layout/view_notification_area.xml
index b411a90ca7..1255323139 100644
--- a/vector/src/main/res/layout/view_notification_area.xml
+++ b/vector/src/main/res/layout/view_notification_area.xml
@@ -18,6 +18,7 @@
         android:layout_height="32dp"
         android:layout_centerVertical="true"
         android:layout_marginStart="24dp"
+        android:importantForAccessibility="no"
         android:padding="5dp"
         tools:src="@drawable/vector_typing" />
 
diff --git a/vector/src/main/res/layout/view_sign_out_bottom_sheet_action_button.xml b/vector/src/main/res/layout/view_sign_out_bottom_sheet_action_button.xml
index 6809cfd119..e31a517749 100644
--- a/vector/src/main/res/layout/view_sign_out_bottom_sheet_action_button.xml
+++ b/vector/src/main/res/layout/view_sign_out_bottom_sheet_action_button.xml
@@ -24,6 +24,7 @@
             android:layout_height="24dp"
             android:layout_gravity="center_vertical"
             android:layout_marginEnd="16dp"
+            android:importantForAccessibility="no"
             android:scaleType="fitCenter"
             android:src="@drawable/ic_secure_backup"
             app:tint="?riotx_text_primary"
diff --git a/vector/src/main/res/layout/view_state.xml b/vector/src/main/res/layout/view_state.xml
index 11f176e405..731f3bd5c8 100644
--- a/vector/src/main/res/layout/view_state.xml
+++ b/vector/src/main/res/layout/view_state.xml
@@ -62,6 +62,7 @@
             android:layout_marginStart="20dp"
             android:layout_marginEnd="20dp"
             android:layout_marginBottom="30dp"
+            android:importantForAccessibility="no"
             android:maxHeight="350dp"
             app:layout_constraintBottom_toTopOf="@id/emptyTitleView"
             app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/view_stub_room_member_profile_header.xml b/vector/src/main/res/layout/view_stub_room_member_profile_header.xml
index 0ba595042a..ee7f63e56c 100644
--- a/vector/src/main/res/layout/view_stub_room_member_profile_header.xml
+++ b/vector/src/main/res/layout/view_stub_room_member_profile_header.xml
@@ -22,6 +22,7 @@
             android:layout_width="128dp"
             android:layout_height="128dp"
             android:layout_marginBottom="16dp"
+            android:contentDescription="@string/avatar"
             app:layout_constraintBottom_toTopOf="@+id/memberProfileNameView"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
diff --git a/vector/src/main/res/layout/view_stub_room_profile_header.xml b/vector/src/main/res/layout/view_stub_room_profile_header.xml
index ecb7174f0e..6b7d2675f4 100644
--- a/vector/src/main/res/layout/view_stub_room_profile_header.xml
+++ b/vector/src/main/res/layout/view_stub_room_profile_header.xml
@@ -12,6 +12,7 @@
         android:layout_width="128dp"
         android:layout_height="128dp"
         android:layout_marginBottom="16dp"
+        android:contentDescription="@string/avatar"
         android:transitionName="roomProfileAvatarView"
         app:layout_constraintBottom_toTopOf="@+id/roomProfileNameView"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/layout/view_url_preview.xml b/vector/src/main/res/layout/view_url_preview.xml
index a8c287b471..93c73cea02 100644
--- a/vector/src/main/res/layout/view_url_preview.xml
+++ b/vector/src/main/res/layout/view_url_preview.xml
@@ -78,6 +78,7 @@
         android:id="@+id/url_preview_close"
         android:layout_width="@dimen/layout_touch_size"
         android:layout_height="@dimen/layout_touch_size"
+        android:contentDescription="@string/action_close"
         android:scaleType="center"
         android:src="@drawable/ic_close_24dp"
         app:layout_constraintEnd_toEndOf="parent"
diff --git a/vector/src/main/res/values/strings.xml b/vector/src/main/res/values/strings.xml
index 38f2001f6d..b3731ae6a3 100644
--- a/vector/src/main/res/values/strings.xml
+++ b/vector/src/main/res/values/strings.xml
@@ -2833,4 +2833,10 @@
     <string name="a11y_screenshot">Screenshot</string>
     <string name="a11y_open_widget">Open widgets</string>
     <string name="a11y_import_key_from_file">Import key from file</string>
+    <string name="a11y_image">Image</string>
+    <string name="a11y_change_avatar">Change avatar</string>
+    <string name="a11y_delete_avatar">Delete avatar</string>
+    <string name="a11y_error_some_message_not_sent">Some messages have not been sent</string>
+    <string name="a11y_unsent_draft">This room has unsent draft</string>
+    <string name="a11y_video">Video</string>
 </resources>