IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.
If you experience that the sound quality is bad during calls, try these actions one after the other. Verify after trying each action whether the problem was solved before trying the next one.
- Check the network signal strength in the status bar to make sure your device is connected to a network. If the signal is weak or you have no signal, move to an open location that is free from obstructions, or get close to a window.
- Make sure your hand isn’t covering the phone microphone. If your Xperia device uses a cover or a case, remove it to see if the sound quality improves. Check that there is no water or dust blocking the microphone or the area around the microphone.
- Restart the Xperia device.
- Make a call to another phone to confirm that there isn’t a problem with the ear speaker of the phone you were calling when the problem arose. If possible, make a call with a different SIM card, to make sure that your current SIM card isn’t defective or old.
If the above solutions do not work, try the following:
- Use the Tests feature in the Support app to run a microphone and ear speaker test.
- Downloaded applications may affect the performance of your device or cause it to behave unpredictably. Use safe mode to check whether a downloaded application is causing the problem. In safe mode, your device only starts with software and applications that were already installed when you purchased your device. If the device performance improves in safe mode, it’s likely that one or more downloaded applications are affecting the device negatively. If the problem is recent and you’re not sure which application is causing the problem, you can start by uninstalling the most recently downloaded application.
- Update the software on your device.
- Back up all important content to the SD card or to a computer, then perform a factory data reset.