Sharp FX Plus ADS1 hard reset

Master Reset Sharp FX Plus ADS1

Turn off your cell phone. Hold the Sym button and the Power button together.
In the Android recovery menu select Wipe data/factory reset by using the volume down or up button and select with Enter.
Select  "Yes - delete all user data" and press Power key to confirm.
When Data wipe complete is displayed, select reboot system now and press Power key to confirm to reboot.

or

Sharp FX Plus ADS1 factory reset

From the Home screen, tap Apps > Settings > Privacy > Factory data reset > Reset phone > Erase everything.

Factory data reset

Erases all data on phone. (Back up your data first!)
This will erase all data from your phone, including: your Google account, system and application data
and settings, downloaded applications. And it will not erase: current system software and bundled
applications, SD card files, such as music or photos.

Back up my data Allow settings and other application data to be backed up to Google servers.
Automatic restore Allow settings or other data to be restored from Google servers if an application is reinstalled.

From the Home screen, tap Apps > Settings > Location & security > Clear storage

Clear credential storage of all contents and reset its password.