Originally Posted by southwestcomm
BIS account from one AT&T device to another? Simply log into your BIS account and update your PIN and device info.
Transfer from AT&T to TMobile? That you can't do. You'll need to create a new BIS account on TMobile.
No! I am just trying to put my old service onto my new Blackberry. When I put my sim card in, I can use the service just for one minute, and after that no more service. does it mean that I have to update the Pin and the device info on the BIS account? How can I log in to this account? at&t never provide me with any infos about this. Thanks!