Format mobile without security code

Aslam o alaikum friends ab ap apna nokia ka mobile formate ker saktay hain woh bhi bina security code k
note: ye trick nokia k kuch models per work kre gi e.g nokia 6120 nokia n73 nokia 6220 aur bhi kuch models hain,
ab chltay hain trick ki taraf sub se pehlay ap apna mobile off ker den aur ab * botton call yes wala botton aur 3 number wala botton ye 3ny botton aik sath daba ker rakhen pher apna mobile on kr den yad rakhen ye 3nu botton us waqat tak daba k rakhnay hain jab tak ap k mobile per time and date seting nh aa jati
lo g apka kaam ho gaya ab baqi mobile ki seting usi tarha ker len ager trick pasang aye to like per click kren    GOOD BYE