In order to hard reset a Ericsson GA 318, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Ericsson GA 318 device will be brought back to the default configuration of a brand new device.
1. Power up the brick... I mean, phone.
2. Open Settings.
3. Select Master Reset.
4. Enter the phone lock code (0000 by default).
5. Confirm with pressing Yes.