1. Turn off iPhone.
    Note: A Standard-SIM card is required in order to use cellular services when connecting to the AT&T network.
    device 2861/1466914.jpg
  2. Remove or insert the SIM card using a paper clip or SIM eject tool.
    device 2861/1466915.jpg
  3. Turn on iPhone.
    device 2861/1466916.jpg