Not sure if your device will continue to work on our network? Check device compatibility (PDF, 209KB)
AT&T Wireless devices
To replace your old SIM:
- Turn your device off.
- Remove the old SIM card.
- Insert the new one.
- Turn your device on.
- Discard the old SIM card.
Need help learning how to insert a new SIM card? Go to our device tutorials
, select Insert SIM & memory card
, and choose the option for your device.
AT&T PREPAID devices
Before you turn off your device, there are a few steps to follow.
- Go to att.com/myprepaid.
- Select My Device and then Update Device. If you don't know your device IMEI, enter *#06# on your phone's keypad to get it.
- Enter the SIM card number and then select Continue.
- Discard your old SIM card.