1. Signal strength will be indicated in the notifications bar. When you are within range of a cellular tower the indicator will show more bars. If you are not in range of a cellular tower you will have fewer bars/less signal strength.
   Note: To view the locations AT&T voice and data service can be used, see the AT&T Network coverage map.
   
2. If 3G is available, the 3G icon will display next to the signal strength indicator in the notifications bar.
   Note: To learn more about the AT&T network, visit http://www.att.com/network.
   
3. If Airplane mode is enabled the Airplane mode icon will display in the notifications bar.