[surferjr11]

I'm on a contract with tmobile and im about to sell my 8900. I got it unlocked, but now is there anything else to do to get it to work through at&t?

[Dubdub]

If you used BIS, make sure you cancel your BIS account or transfer it to another BB. Just closing the account or switching phones/SIMs won't do it. You need to call and have it done.

Read the FAQ article on buying a used BB from eBay. The same things apply to buying (or selling) a used device. Could save you time, trouble and grief in the future.

[surferjr11]

whats bis? im new to all of this i dont really know much. ive looked at all the other posts and they tell me how to unlock the phone, but i dont know what all to do.. can you give me step by step directions?