Find "Factory data reset"
Press Applications.

Press Settings.

Press Privacy.

Press Factory data reset.

Restore factory default settings
Press Reset phone.

Press Erase everything.
Wait a moment while the device restores the factory default settings.
Follow the instructions on the display to configure the device and prepare it for use.
Wait a moment while the device restores the factory default settings.
Follow the instructions on the display to configure the device and prepare it for use.
