In order to hard reset a Samsung i907 Epix, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung i907 Epix device will be brought back to the default configuration of a brand new device.
1. Turn on the phone by press-holding Power button.
2. Next, press-hold the H button. Afterwards, press-hold the Power button until the phone's screen flashes red.
3. Release the Power button.
4. Release H when the Factory Reset screen appears.
5. Now just follow the on-screen instructions. Done.