In order to hard reset a Gionee L800, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Gionee L800 device will be brought back to the default configuration of a brand new device.
1. Power up the phone.
2. Enter Settings and choose Restore Settings option.
3. Tap the 1122 security code into the phone.
4. The phone will now reset and restart. Grats.