Troubleshooting
Have you tried this?
Xperia™ XZ1 Dual SIM support overview
There are a few things you should try first when you experience problems with your device:
Restart
By restarting your device you turn off all running applications and free up memory. This
sometimes automatically solves problems with your device . If the device won't restart
normally, you can force your device to restart. No settings or personal data are deleted
during a forced restart.
To restart your device
Your device may fail to restart if the battery level is low. Connect your device to a
charger and try restarting again.
1. Press and hold down the power key .
2. In the menu that opens, tap Restart. The device restarts automatically.
To force the device to restart or shut down
3. Press and hold down the power key and the volume up key at the same
time for 6 seconds.
4. Your device vibrates once. Depending on whether you wish to force the device
to restart or shut down, proceed as follows.
If you wish to force restart the device: Release the keys at this point. The
device restarts.
If you wish to force shut down the device: Continue pressing the keys.
After a few seconds, the device vibrates three times and turns off.
Update