Samsung Epic 4G Black hard reset
Press and hold Power + Camera + Volume Down. when Samsung logo appears release only power button. In menu select Factory data reset.
Select with HOME key. After warning message select Vol UP key.
Use this method to hard reset your Samsung Epic 4G Black 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.
If you know the hard reset using buttons / keys, pls leave a comment. All comments are welcome! :)