If you have activated call forwarding (e.g., to voicemail), dial ##002# and press call. This erases all forwarding rules instantly.
This code initiates a "soft format" or hard reset, erasing all personal data and restoring the device to its factory state. *#7780#
These codes will erase data or reboot your phone abruptly.
Use the keypad to type the code exactly as shown (starting with * and ending with # or a digit).