hello i got a nokia 6103b from usa, but i waht to put a chip from a mexican cel, whit the original nokia chip the cell. is ok, but when i put the mexican chip from movistar proveedor, the cell say unlock, does i need a codes for mexican compamy or just the codes for usa nokia cell ph, ? my imei 352269017707592 usa nokia 6103b and whant to put a mexican chip from a movistar supplie. thnx. and hope some 1 can help me good bless.