Blackberry 8800 unlock help!
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I bought a blackberry 8800 for T-mobile from ebay. I also bought an unlock code and followed the instruction to unlock the phone. It was confirmed the phone is in unlock stage
Newtork Subset Disable
Service Provider Disable
Corporate Disable "
However, when I put the At&t SIM card into the phone and the phone still show "Insert SIM Card"
I had contacted the party who provided me the unlock code and they told me that it is related to the SIM card not the phone itself.
Can somebody provide me some ideas?