Find "Reset phone"
Slide your finger down the display starting from the top edge of your phone.
Press the settings icon.
Press the settings icon.
Press Backup & reset.
Press Reset phone.
Restore factory default settings
Press Erase all data until the display tells you that the function is turned on.
Press OK.
Press OK to confirm.
Wait a moment while the factory default settings are restored.
Follow the instructions on the display to set up your phone and prepare it for use.
Wait a moment while the factory default settings are restored.
Follow the instructions on the display to set up your phone and prepare it for use.