Learn how to use NumberSync for Android tablets

Use your smartphone number to make and receive calls on compatible tablets. Learn how.

NumberSync for Android Tablets

Find out how to use one phone number on up to five compatible Android based tablets using NumberSync. Send and receive voice and video calls, texts, and share Web content from one mobile number.

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NumberSync for Android Tablets

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How syncing works

Sync your AT&T smartphone with up to 5 Android^® tablets to make and receive voice and video calls on your tablet. All your synced devices ring if someone calls your number, and you can answer any one you like. NumberSync^SM works even if your smartphone isn't with you, nearby, or turned on.

Make sure you have:

A NumberSync-capable Android tablet¹
The NumberSync app installed on your smartphone and tablet
An HD Voice-enabled smartphone
An AT&T Video Call-capable smartphone for video calls on your tablet
A high-speed internet connection, like Wi-Fi^® or our mobile broadband

Heads up:

Don’t have an HD Voice–capable phone? Ordering a new phone or tablet online is easy. Find out how to upgrade your phone or device.
Not sure how to make calls on your tablet? No worries, we’ve got you covered. Learn how to make calls using your Android tablet.

Restrictions

Service and TTY limitations for 911 calls¹ apply. All 911 calls drop if you lose your Wi-Fi connection.
NumberSync doesn't support calls to 211, 311, 511, and 811.
NumberSync isn't supported in:
- China and Cuba
- India, Iran, and Israel
- North Korea
- Pakistan
- Saudi Arabia, Sudan, and Syria
- Turkey
- United Arab Emirates
- Vietnam

NumberSync billing info

When using NumberSync to make or receive calls to:

The U.S., Puerto Rico, or the U.S. Virgin Islands – We won't deduct from your smartphone plan minutes, even if you're traveling abroad and call a U.S. number.
An international number – We charge international long-distance rates based on your smartphone plan or international option. It doesn’t matter where the call originates.

Heads up: Data charges apply if you use a tablet that isn’t connected to Wi-Fi to make or receive NumberSync calls. This includes standard U.S. data rates and international data rates when traveling abroad.

View NumberSync bill charges

Go to Your bill. Check the Voice usage summary section, then look for NBSS prefix in the bill details section to identify NumberSync calls.

See all important details

Last updated: April 18, 2025

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