1. To use your new AT&T 4G device with an AT&T MicroCell, it must be within signal range and added to the approved user list.
   Note: 2G and non-AT&T devices are not compatible with AT&T MicroCell.)
   
2. To add a device to your approved user list, from the home screen of the device you set up as the AT&T MicroCell's primary number, tap the Messaging icon.
   Note: You can also add an approved user by logging in at www.att.com/microcell using your myAT&T account information.
   
3. Tap the Plus icon to send a message to a new recipient.
   
4. Enter the short code 6235 (MCEL) as the recipient of the text message.
   
5. Enter Enter ADD 5555555555 (your device phone number) in the message field, then tap SEND.
   
6. When successfully connected to the device, it will show “AT&T MicroCell” or “AT&T M-Cell”.
   
7. If you do not see “AT&T MicroCell” or “AT&T M-Cell”, turn your mobile device (not MicroCell) off, wait 10 seconds and then turn it back on
   Note: Depending on the signal strength of the AT&T cell tower, the time for your mobile device to switch to the MicroCell can vary. It may take seconds or up to five minutes.
   
8. Visit the Troubleshoot & Resolve tool to help resolve device and service issues. To learn more about the AT&T Microcell go to www.att.com/devicehowto and select “MicroCell”.