Will AT&T unlock old iphone if I upgraded to the iphone 5?

Will AT&T unlock old iphone if I upgraded to the iphone 5?

Balls

Yes if you finished the 2 year contract.

You will have to contact this third party
http://www.vunlock.com/
att experts

You can do it hassle free Go to http://attiphoneunlocker.com/ Cost $24.95 Once you receive your email to confirm that your handset is unlocked, for the iPhone Connect to itunes with a non accepted sim (for example a tmobile sim) and do a back up and restore. Your phone can now be used with any gsm network.

Instructions - to unlock iPhone Please Download latest version of Itunes from Apple Website. 1. Once you do this please Connect the Phone via the usb cable while Itunes is on. If your phone is not the current version (most updated), it will prompt you to update. Please update to current version (which is most likely 5.1.1) 2. Please insert foreign sim card (Please make sure the sim card is cut to fit in the slot) 3.It should automatically detect the new network. If it does not please go to Settings > General > Reset > Reset Network settings. It will take about 30 seconds. It will not show on Itunes that the phone is unlocked. You will see the phone Searching for signal. If it does not please do a Restore and restart the phone. 4.It should now be unlocked permanently!

There's a possibility the code will be returned as NOT FOUND and its not in our control. If that happens you will be refunded.
http://attiphoneunlocker.com/