occasionally you will need to factory reset your phone as part of a troubleshooting step or if you have forgotten your password/Pin. to do this follow these steps
- Hold down the Power button for a short while to switch off the mobile
- press Volume Up + Power button for a few moments to turn the device back on
- When the SAMSUNG logo appears release all keys.
- If Android Robot image with "No command" pops up you have to tap on the screen (multiple times)
- In this mode choose "wipe data / factory reset" by using Volume buttons to navigate and the Power key to confirm that
- Then select "Yes -- delete all user data" by using Volume keys and press the Power button once.
- Finally choose "reboot system now" with the Power key
- Complete your device is now setup as factory defaults.