In order to hard reset a Ericsson GF 788, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Ericsson GF 788 device will be brought back to the default configuration of a brand new device.


1. Power up the phone.


2. Enter Settings  and Master Reset.
3. Type in the device's lock code (0000 by default). Confirm.
4. Done, the hard reset process is complete.