Unlocking
hello there....well its quite simple...there is nothing wrong with your phone ...its your SIM... if it is asking for a PUK (Personal Unblocking Key) code...call your subscriber and ask them for PUK code,entering this code will reset your sim
To unlock the phone to any network you need to call the customer care of your original network provider...just keep the model number of your phone number handy (you will find that on the box in which you got the phone)...or the IMEI number (15 digits mostly) by dialing *#06# on your phone or beneath the battery or on the box near bar code....this is a paid service and charges differ from network to network
that should solve the problem.....you will be able to use any sim in your phone of any service around the world
Hope this help
Cheers
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