1.- Basic Reset or Soft Reset
2.- Total Reset or Hard Reset
Turn off the phone
Press Power ON green, red and camera botton at he same time, or This option restores the original operating system from the ROM. Formats the C: partition and deletes all data including the memory
card. Key Code *#7370# (click this combination of keys on the keyboard in the mobile)
You can also achieve Total Reset by pressing and holding down following keys:
* + 3 + Green Button (call) immediately after turning the mobile on. Important: To proceed to reset, the battery must be full and the mobile device connected to the charger. If during the course of reset,
the mobile stop receiving electricity it can ruin the internal flash memory of the mobile device and stop function.