Things You Didn’t Know About Factory Resetting an Android

Go to Settings > System > Reset options > Erase all data (factory reset) > Erase all data. After the erasing process, set up ...
SlashGear

How To Troubleshoot The 'System UI Isn't Responding' Error On Android

Encountering the "System UI isn't responding" error on your Android phone can happen when the user interface responsible for displaying your home screen ...