In order to hard reset a Cect T520, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Cect T520 device will be brought back to the default configuration of a brand new device.
1. Turn on the phone. Type in the *#6810# code. Press Call Button.
2. Now type in this code, *#337#. Press Call Button again.