Device Setup

Device Setup

Set up your device for the first time or after a factory reset.


Prenote info

Before setting up your device, make sure you have completed the online activation process. Please visit Activate phone, SIM card, or other device for more information. The AT&T Global Modem USB800 is compatible with Microsoft® Windows® 7 and higher, Mac OS 10.5 and higher, and Linux OS.
1. Insert the USB Connector of the AT&T Global Modem USB800 into an open port on the desired device. The device will automically connect to the AT&T network.



2. From the connected device's internet browser, navigate to http://att.manager

Step 2

3. Edit Network settings as desired. 

Step 3

What's in the box?

• AT&T Global Modem USB800
• SIM Card


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