Guide to enter/exit Xperia Safe Mode
Enter Xperia Safe Mode
S1-1. Press and Hold Power Button until Power Off menu appears
S1-2. Once Power Off menu appears, Press and Hold Power Off Menu to show Reboot to Safe mode dialog
S1-3. Press OK to proceed to Safe mode.
S1-4. Once reboot, Xperia will enter safe mode (shown at left bottom)
Note: Only app in System app will be loaded.
Exit Xperia Safe Mode
S2-1. Press and Hold Power button to show Power Off Menu
S2-2. Select Power Off to turn off the phone.
S2-3. Press Power button again to boot phone.