In order to hard reset a 3Q Lite AC7803C, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
3Q Lite AC7803C device will be brought back to the default configuration of a brand new device.
1. Press-hold Power until the phone powers down.
2. Go to Settings and Backup & Reset.
3. Select Factory Data Reset and Reset device.
4. Lastly, select Erase everything to confirm and complete the operation. Done.