Use a WWAN connection on Mac
If your wireless service supports it, and you have a wireless wide area network (WWAN) adapter that supports Global System for Mobile Communications (GSM) or code-division multiple access (CDMA), you can connect your computer to the internet using the cellular network. This is useful if you’re in areas where there isn’t a wired or wireless network.
After you set up your account with your wireless provider and connect the WWAN adapter to your computer, Network preferences opens and displays your WWAN connection settings.
On your Mac, choose Apple menu > System Preferences, then click Network.
Select your WWAN connection in the list on the left.
Make sure your account name is correct, then enter the password for your account, if necessary.
Click Connect to start your connection. After you’re connected, you can monitor the time you’ve been connected, the packets sent and packets received status, and see the IP address the connection is using.
Select “Show WWAN status in menu bar” in the WWAN pane of Network preferences to keep the WWAN status icon in the menu bar.
To adjust other WWAN settings (such as DNS proxy), adjust WINS server settings, or change the vendor and model of your modem, click Advanced.