- Slide the ON/OFF switch to the ON position to turn the device on. The Power light on the front of the device will turn green.
Note: The account must be active and provisioned with an appropriate voice/data plan and the device must be located within AT&T network coverage. - The Signal Strength LED will show the current connection status.
Note: The LED will display green if the AT&T Wireless Internet is receiving a LTE signal, blue if it is receiving a 3G/4G/HSPA+ signal, red if it is receiving no wireless signal or a SIM error.