<p>Download the free ActiveArmor app to: </p><ul><li>Help block spam and fraud calls</li><li>Secure your device and the stuff on it</li><li>Get notified of data breaches</li></ul>

Get the AT&T ActiveArmor app

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User manual

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Device Help & How-To Guides - AT&T

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DHTC Top Solutions AT&T Velocity USB Stick (MF861)

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Perform a soft, factory, and alternate master reset of the device.

Reset Device

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

Connect to AT&T Network

Install the Mac OS driver to improve throughput. (Recommended for Mac OS 10.10)

Mac OS Driver

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

Signal & Cellular Data

Use hotspots, connect to Wi-Fi, turn data on or off, and more.

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

Learn How to Clean Your Device

This article describes how to connect a laptop.

Connect to Laptop

Hardware features and software navigation of your device.

Device Layout

This article describes how to connect an external antenna.

External Antenna

Install and remove the SIM. The device comes with a nano-SIM card preinstalled.

Insert SIM Card

This article provides an overview of the status &amp; indicators.

LED Indicator

Access the management website to view connection strength, network information, read AT&amp;T messages, access settings and view device information.

Management Website

Set or Change Password Security

Learn how to find your device and secure your info.

Explore ways to resolve device issues or reset your device.

Device help

Having device issues?