1. Signal strength will be indicated in the Notification 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 less 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. The Network type icon will be displayed in the notification bar. From slowest to fastest they are, E, 3G, 4G, LTE.
   Note: To learn more about the AT&T network, visit http://www.att.com/network.
   
3. To access the Mobile Network settings from the Start screen, swipe down from the top of the screen to reveal the Action center.
   
4. Tap ALL SETTINGS.
   
5. Tap cellular+SIM.
   
6. To enable or disable cellular data, tap the Data connection toggle.
   
7. To change roaming options, tap the Data roaming options drop-down menu.
   
8. Tap the desired option.