How to format your Mobile completely

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My mobile was affected by viruses, yesterday i was searching
 on the internet for cure.I founded a great solution of it i.e.,
 formatting your mobile completely like your PC.Here is 
the trick to do this.




Instructions
 1. Switch off your phone.
2. Remove SIM card & memory chip.
3. Now press & hold keys - 3,*,call Button.
4. Then without leaving these three buttons press power button.
5. Formatting task will be started.
6. Remember its a very rare trick.

Wait for formatting to be finished, Before carrying out this process 
make sure you have copied all your contacts and notes onto your 
Memory, because every thing will be deleted. When its finished the
formatted phone may be like new,now your mobile is viruses