Device help

Get step-by-step help and info for your device.

Signal & Cellular Data

View cellular network signal, turn cellular data connection, international roaming, and mobile data connection on or off.


Determine your device's SIM card type, operating frequencies, and physical characteristics.

Learn How to Clean Your Device

Get tips on the best way to keep your device clean.

Connect to AT&T Network

This article describes how to connect to the AT&T Network.

Device Setup

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

Management Website

View network information, messages, and device information in the management website. 


Set a PIN lock. 

Modem & Router Settings

Access modem and router settings.

View Messages & Notifications

View and delete messages.

Find IMEI, Phone & Serial Number

View the device phone, serial, and IMEI number. 

Software update for the AT&T Global Modem (USB800)

Learn how to update the software of the AT&T Global Modem (USB800).

Software Version

Determine your current device software version and check for updates.

View & Manage Data

Access Usage Manager to view data usage, set data limits, and see the apps using the most data.

LED States

This article provides an overview of the LED states.

Limited or No Connectivity

Troubleshoot limited or no connectivity on your device. 

Reset Device

Perform a factory reset to restore default settings on the device. Perform a factory reset if you have been locked out of access to your device settings.

Having device issues?

Fix common service and device problems.