How to master reset Gear S3 with hardware keys - restore original factory settings
Back up data on the internal memory.
Turn the Gear S3 off.
Press and hold the Power key until REBOOTING displays at the bottom of the screen.
Press the Power key repeatedly until the Select REBOOT MODE screen displays.
Press the Power key to highlight ' Recovery'.
Press and hold the Home key to select.
Keep holding the Power key until the Gear S3 begins rebooting.
