Do I have to unlock a Cingular phone for use on AT&T ?
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Do I have to unlock a Cingular phone for use on AT&T ?
Yes, you need to unlock your Cingular phone to use it with AT&T network. You can approach Unlocking4u.com and remove the network lock with Cingular network.You need to specify the mobile make,model,country, locked network.based on the availability you can get the permanent unlock service along with free instructions.