SonySony Xperia X (F5121)DeviceReset to factory settings
When certain applications no longer function properly or if your Sony Xperia X is very slow, you can reset the device to its factory settings. This will reset the telephone to the settings it had when you first turned it on.
Please note: your Sony Xperia X may request a security code, which, if necessary, can be found in the instructions of the Sony Xperia X. Make sure you have them at hand.
If you purchased a used device and do not know the code, you should ask the previous owner for it.
Please note: resetting the device will erase all data and settings on the device. If necessary, make a backup on your computer.
Select Next for step-by-step instructions to reset the Sony Xperia X to factory settings.
Go to the Start screen.
Choose Backup & reset.
Optional: choose Back up my data and choose an option.
Choose Factory data reset.
Choose RESET PHONE.
Choose ERASE EVERYTHING.
All data and settings saved on the Sony Xperia X will be deleted.
The Sony Xperia X will automatically reset and reboot.