This article provides an overview of signal and data availability.
INSTRUCTIONS & INFO
The Signal Bars display the connection strength. The more bars that are displayed, the better the connection. The less bars displayed, the poorer the connection. Note: To view the locations where AT&T voice and data service can be used, see the AT&T Network coverage map.
When connected to 4G LTE, the 4G LTE icon will be displayed. Note: To learn more about the AT&T network, visit http://www.att.com/network.
When Airplane mode is active, the Airplane icon will display in the notification bar.