Samsung i780 hard reset
Press and hold CALL + END + RESET (HOLE) buttons, then press Space for FORMAT Samsung i780.
Warning! All of your data will be lost!
1. Press and hold call and end call buttons together +
2. Press RESET with stylus
3. Hold them until LED turns red, then release RESET, keep pressing call and end call buttons until prompt message
4. Press space to format phone.
Samsung SGH-i780 soft reset
If your Samsung i780 frozen or not responding just take out the battery and reinsert it.
Use this method to hard reset your Samsung i780 phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup to your PC before full reset! Take out SIM card before full reset.