1. When a signal is available, the Signal Strength icon will be displayed in the Notification bar.
   
2. When connected to a network, the AT&T icon will be displayed in the Notification bar.
   
3. When a cellular data connection is available, the 4G LTE or 4G icon will be displayed in the Notification bar.
   
4. When the battery is fully charged, the Fully charged battery icon will be displayed.
   
5. When the Battery is charging, the Charging icon will be displayed in the Notification bar.