In order to hard reset a Samsung D428, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Samsung D428 device will be brought back to the default configuration of a brand new device.


1. Power up the phone with the Power button.

2. Type in this code, *2767*3855#, and confirm it using Call button.

3. Your phone should now reset and restart. Done.