# Why don't music files automatically resume playing after hanging up a system call on an Android device? (/en/api-reference/faq/integration/music_pause)

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The `startAudioMixing` method is called to play a music file on an Android device. During the playback process, the system's built-in phone software is used to answer or make a call. After hanging up the phone, the music file does not automatically resume playback.

## Reason [#reason]

The SDK cannot determine whether the system phone has finished using the audio output device, so music files will not resume playback automatically.

## Solution [#solution]

After calling the `startAudioMixing` method, it is recommended to listen for phone events using the native Android method `PhoneStateListener` and perform the following steps:

1. When you answer or make a call, call the `getAudioMixingCurrentPosition` method to get the playing progress of the music file.
2. After hanging up the phone, call `startAudioMixing` method again to play the music file, and then call `setAudioMixingPosition` method to restore the playback progress.