Sony Xperia XZ1 Manual page 16


Turn off your device and then turn it back on. By doing this you turn off all running
applications and free up memory, which sometimes automatically solves the issue.

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 suggested solutions do not work, try the following actions:

Run the Xperia™ Diagnostics application to verify that the microphone and ear speaker
are working properly.
To run a diagnostic test
1. Find and tap Settings > System > About phone > Diagnostics.
2. Swipe to the TEST tab and select a test from the list.
3. Follow the instructions and tap YES or NO to confirm if the feature works.
4. Tap Done.

Use safe mode to check if any downloaded applications are 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's performance improves in safe mode,
it's likely that one or of your post-purchase downloaded applications are affecting the
device negatively. You can exit safe mode and restart the device to uninstall the
application or applications that you suspect are causing the problem. 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.
To enable Safe mode
1. Turn off your device.
2. Press and hold down the power key
3. When the Xperia™ logotype appears, release the power key, then press and hold
the volume down key until Safe mode appears on the screen.
To exit Safe mode, restart the device.
To uninstall an application from the Application screen
.