Hi..
don't worry..
There are many way to unlock your mobile by using box,software,code..
I suggest you code is best way to unlock your mobile...If you need unlock code means you can get the unlock code here Ihav.net to your mobile Nokia 1200....This unlocking process based on IMEI number..You can get the IMEI number using * # 0 6 #...You can only have five failed attempts before your phone removes the option of being unlocked..http://www.Ihav.net/nokia-1200/rs6wp9/