AppYonder

Device Help

AT&T Services, Inc.

4.1(407)ProductivityAges 17+

Get it free on the App StoreOpens Apple's App Store

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About this app

Get the most out of your smartphone with AT&T Device Help. Whether you’re setting up a new device or solving a problem, Device Help puts guidance and diagnostics right at your fingertips. • Learn how to use your device with step‑by‑step guides and helpful tips • Keep your device running smoothly with alerts for important updates • Quickly identify and troubleshoot common issues with built‑in diagnostics

What's new

Version 3.340.3 · Aug 26, 2026

Minor enhancements and bug fixes.

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