Learn how to use one smartphone number across multiple devices to send and receive texts, make and receive calls, and more.
 With AT&T NumberSync™, once you sync devices to your smartphone number, you can make and receive voice or video calls from whatever device you choose. Video calls require an AT&T Video Call-capable smartphone. Your smartphone number will display on the call recipients caller ID. Certain restrictions, requirements or limitations may apply. Visit NumberSync Support or att.com/numbersync for more details.
In this tutorial, you will learn how to:
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• Log in to NumberSync
• Log out of NumberSync
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NumberSync for Android tablets requires smartphone set up for HD voice on AT&T postpaid wireless account & compatible tablet. To use NumberSync for video calls on tablet, phone must be video call capable.Â
Device Limit: Sync up to 5 tablets.
Charges: When tablet not connected to Wi-Fi, data usage rates apply to voice & video calls on tablet. International calls sent on tablet incur charges consistent with phone’s rate plan or international package.
Roaming: Cannot use NumberSync outside US, PR, or USVI. Â
Calls via NumberSync cannot be used with TTY & will not support 911 TTY calls. Visit att.com/numbersync for more information about 911 services, TTY, and progress with RTT.Â