How do I deactivate my old AT&T phone?
Visit www.att.com/suspend or call AT&T at 800-331-0500.In respect to this, how do I deactivate my AT&T phone?In order to suspend your line:Select myAT&T at the top of the page.At the top of the page under Wireless, select Suspend or Reactivate Service.From the menu beside the device you ...