How To Activate An Old At&t Sim Card. Who knew it could be this simple. Select a wireless user.
Or do I need to buy a new one. Locate andor write down your SIM card number. Just drop by and pick one up.
23 hours ago Aug 07 2016 Here is the tutorial on how to activate ATT iPhone with SIM.
Select a wireless user. To install the SIM card. It will connect you to ATT customer care. Hello All I am urgently needing help from O2 with reactivating an old o2 sim card.
