Samsung i997 Infuse 4G hard reset Instructions

 
All data will be lost!
Press and hold VOLUME UP + DOWN + POWER on i997, release only POWER key, but keep pressing VOL +/- for 8 sec., in recovery menu (Vol DOWN to highlight, POWER key to select) then select Delete all user data.

or Tap Applications ➔ Settings ➔ Location and security. Tap Clear storage.

Infuse 4G Safe mode

1. Make sure your phone is turned off.
2. Press and hold the power key to boot up your device.
3. After the “Rethink Possible” letters change from blue to black, continually tap the MENU key.
When the Home screen is displayed, Safe mode is displayed in the lower left corner of the screen.