Справочник Пользователя для Netgear AirCard 779S (AT&T) – AT&T Unite Express

Make sure that you get a data-enabled SIM: 

Some phone SIMs work, but not all. Best practice is to use a hotspot or tablet SIM. 
Phone SIMs and hotspot and tablet SIMs look the same but work differently on the 
network.

If you want to use 4G LTE data, make sure that the service provides 4G capability.

Get the APN from the service provider:

The APN is often listed in the literature that came with the SIM.

The service provider website might also list the APN information. 

As a last resort, most service provider APN information is available through a web 

search. For example, search for <service provider name> APN.

For information about adding, selecting, or removing APNs, see 

To connect to the Internet, you need a micro-SIM card. To obtain a micro-SIM card, contact 
your Internet service provider. 



Remove the back cover by lifting at the notch on either corner of the hotspot.

Insert the micro-SIM card.