In order to hard reset a Samsung R680 Repp, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung R680 Repp device will be brought back to the default configuration of a brand new device.
1. Switch off the device.
2. Now press'n'hold the Volume Up and Power and Home buttons.
3. Select the wipe data/factory reset. Do that by using Volume buttons to scroll and Power button to select.
4. Continue by selecting Yes and Reboot System Now.
5. Done.