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Browse device topics
Use hotspots, connect to Wi-Fi, turn data on or off, and more.
Articles
Signal & cellular data
View cellular network signal, turn cellular data connection, international roaming, and mobile data connection on or off.
Get device details and technical specs.
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.
Specifications
Determine your device's SIM card type, operating frequencies, and physical characteristics.
Learn how to find your device and secure your info.
Secure my device
Set a PIN lock.
Check your battery life, adjust sound, set up alerts, and more.
Modem & router settings
Access modem and router settings.
View messages & notifications
View and delete messages.
Update device software, check data use, and manage device memory with ease.
Find IMEI & serial number
View the device phone, serial, and IMEI number.
Software update
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.
Explore ways to resolve device issues or reset your device.
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.
Fix common service and device problems.
