Samsung Galaxy S3 Hard Reset

Method 2: Hardware Keys

1. Turn off your Samsung Galaxy S3.
2. Press and hold down the “Power” button, “Home” button, and the “Volume Up” button.
   
    
3. Wait for your phone to vibrate, then release only the “Power” button.
4. Wait for the Android System Recovery screen to appear, then release the “Home” and “Volume Up” keys.
5. Press the “Volume Down” button until the “Wipe data / factory reset” option is highlighted.
   
    
6. Press the “Power” key to select the option.
7. Press the “Volume Down” button until “Delete all user data” is highlighted.
8. Press the “Power” button once again to select the option. Your phone will then perform the reset process and display “Reboot system now” when complete.
   
9. Press the “Power” key to select the reboot option and complete the master reset.  

 

Method  2: Dial Pad

1. Open the dial pad on your Samsung Galaxy S3, which is normally represented by an icon of a green phone receiver.
2. Enter *2767*3855#. Your device will then reset itself and erase all your personal information and settings