Method:1
1. Switch off the phone.
2. Hold down the following three buttons: Green (call answer button, *
button, and '3? button.
3. While holding these buttons, press the power button and switch on
the phone.
4. When the message 'Formatting' appears on the screen, release all
of the buttons.
Method: 2 ( Hard Format)
1. Switch off the phone.
2.
Hold down *#7370# button.
3. While holding these buttons, press the power button and switch on
the phone.
4. When the message 'Formatting' appears on the screen, release all
of the buttons.
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