diff --git a/vector/src/main/java/im/vector/app/features/call/telecom/TelecomUtils.kt b/vector/src/main/java/im/vector/app/features/call/telecom/TelecomUtils.kt
deleted file mode 100644
index 819a1f6c0a..0000000000
--- a/vector/src/main/java/im/vector/app/features/call/telecom/TelecomUtils.kt
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (c) 2020 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package im.vector.app.features.call.telecom
-
-import android.content.Context
-import android.telephony.TelephonyManager
-import androidx.core.content.getSystemService
-
-object TelecomUtils {
-
-    fun isLineBusy(context: Context): Boolean {
-        val telephonyManager = context.getSystemService<TelephonyManager>()
-                ?: return false
-        return telephonyManager.callState != TelephonyManager.CALL_STATE_IDLE
-    }
-}
diff --git a/vector/src/main/java/im/vector/app/features/voice/AbstractVoiceRecorder.kt b/vector/src/main/java/im/vector/app/features/voice/AbstractVoiceRecorder.kt
index 786920aa22..1a91c00e11 100644
--- a/vector/src/main/java/im/vector/app/features/voice/AbstractVoiceRecorder.kt
+++ b/vector/src/main/java/im/vector/app/features/voice/AbstractVoiceRecorder.kt
@@ -23,7 +23,7 @@ import java.io.File
 import java.io.FileOutputStream
 
 abstract class AbstractVoiceRecorder(
-        context: Context,
+        private val context: Context,
         private val filenameExt: String
 ) : VoiceRecorder {
     private val outputDirectory: File by lazy {
@@ -39,7 +39,7 @@ abstract class AbstractVoiceRecorder(
     abstract fun convertFile(recordedFile: File?): File?
 
     private fun init() {
-        MediaRecorder().let {
+        createMediaRecorder().let {
             it.setAudioSource(MediaRecorder.AudioSource.DEFAULT)
             setOutputFormat(it)
             it.setAudioEncodingBitRate(24000)
@@ -48,6 +48,15 @@ abstract class AbstractVoiceRecorder(
         }
     }
 
+    private fun createMediaRecorder(): MediaRecorder {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            MediaRecorder(context)
+        } else {
+            @Suppress("DEPRECATION")
+            MediaRecorder()
+        }
+    }
+
     override fun startRecord() {
         init()
         outputFile = File(outputDirectory, "Voice message.$filenameExt")