Sharp AQUOS SH80F Master Reset
You can delete all phone data and settings, or restore them to a previous state using a back up.
1 In the home screen, Select [Application icon]>[Settings]>[Privacy] Factory data reset
2 Select an item
Back up my data: Allow back up of application data, Wi-Fi passwords and other settings.
Automatic restore: Allow to restore your settings and application data when the applications are reinstalled on the phone.
Factory data reset: Reset your settings to the factory default values and delete all data in the phone.