In order to hard reset a LG GU292, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
LG GU292 device will be brought back to the default configuration of a brand new device.
1. Turn off the device.
2. Now open the phone's dialer (press the Call button).
3. Enter this code into the device: 2945#*101# or 1809#*101#
4. Press the Call button again. Done!