hi i wish to add my experience here . i brought the Motorola mobile from uk locked with t-mobile .i have no idea about have to solve the problem.
i used codes to unlock my mobile .i got the codes from here mobileunlocksolutions here they ask the following details before providing the codes they are
mobile model,country and the network which locks your mobile , imei number of the mobile .finally they will send the codes to unlock the mobile.you can get the instructions about how to use the codes in your mobile from here unlocking SPAM
.here they provide you the step by step process about how to enter the codes in our mobile.here they provide codes for all mobile models .