View cellular network signal, turn your mobile data connection on or off.
INSTRUCTIONS & INFO
Device signal strength can be determined by viewing the Signal strength indicator at the top left of the device. Note: To view the locations AT&T voice and data service can be used, see the AT&T Network coverage map.
The type of data connection will display next to the signal strength. Note: To learn more about the AT&T network, visit http://www.att.com/network.