Hey, just bought a 6610i o2 phone, however, when I put in my T-mobile chip, an error comes up stating "enter restriction code." I bought it off Ebay from a man claiming the phone had been unlocked, allowing any network chip to be used in it. i was just wondering, if I brought it to be properly unlocked would this fix the problem, or do I have to find ring t-mobile/nokia/o2 to find out what the restriction code is??

Please please help if ya can. Any suggestions appreciated