Mobility services

NumberSync

Mobility NumberSync

Overview

More ways to use your number

More ways to use your number

Ever wish you could make or receive a call when you don’t have your phone with you? With NumberSyncSM, you can use your wireless number on any compatible device and you can make or receive calls using your wireless number, whether or not your smartphone is handy.

Freedom and convenience with NumberSync

  • You can use your mobile number with multiple devices.
  • Business colleagues can recognize your call even when you’re not using your phone.
  • You can make and receive calls from whichever synced device you choose.

Terms and conditions: NumberSync
NumberSync: Requires compatible device on eligible wireless plan & smartphone on AT&T postpaid wireless account & set up for HD Voice. Visit att.com/hdvoice for information. NumberSync requirements, features & functionality may vary by device type & manufacturer. Data Charges: Apply to SMS/MMS messages sent/received on synced wearables and to calls made/received on synced Android tablets when not connected to Wi-Fi. 911 Calls. If you cannot be located using location information obtained from your device, 911 calls will be routed based on the address you provide in the NumberSync settings of your device. 911 calls are not supported outside the US, Puerto Rico, or USVI. 911 Calling with TTY & Real-Time Text: Due to technical limitations, NumberSync cannot be used with TTY devices and cannot support 911 calls over TTY devices. Persons with communications disabilities can use Real-Time Text (att.com/RTT) as an alternative. 911 services can be reached by either: (1) calling 911 using Real-Time Text, or (2) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (3) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (4) using relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone, or (5) using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network. Additional restrictions: NumberSync cannot be used to initiate calls to 211, 311, 511, or 811. Not compatible with Smart Limits, Ringback Tones, OfficeDirect, or OfficeReach. Additional Information: Real-Time Text is not supported on all secondary devices like wearables and computers. Go to att.com/RTT for more information on how to use Real-Time Text. Visit the FAQ for Apple or the FAQ for wearables.

Apple

NumberSync for Apple

Turn your other Apple® devices into additional phones that share the same AT&T mobile number as your Apple iPhone®. You don't need a separate number to make or receive calls on your other devices. What's more, you can make a call over Wi-Fi or an AT&T mobile broadband connection even when your iPhone isn’t turned on.

NumberSync for Apple
Devices that support NumberSync for Apple

Devices that support NumberSync for Apple

Smartphone requirement:

  • Apple iPhone 6, 6 plus, or newer model running iOS® 9.3 or later
  • Apple iPhone 7 and 7 Plus run iOS 10

Compatible NumberSync devices:

  • Most Apple iPad devices running iOS 9.3 or later
  • Apple Watch® running watchOS® 2 or later
  • Most Apple iPod Touch® devices running iOS 9.3 or later
  • Most Mac® computers running OS X El Capitan

Note: To use NumberSync, all Apple devices must share the same Apple ID. Also, your compatible synced device will need a Wi-Fi or wired broadband connection. See the frequently asked questions below for more information.

FAQ for NumberSync for Apple

  • You need an Apple iPhone 6, 6 Plus, 6s, or 6s Plus running iOS 9.3 or later.
  • You must enable Wi-Fi Calling on your iPhone first. For information on how to set up Wi-Fi calling, visit the Wi-Fi calling support page.
  • You need a compatible NumberSync device that uses the same Apple ID as your iPhone.
  • Your NumberSync device must have access to a broadband connection. This can be over Wi-Fi, wired broadband, or AT&T mobile broadband.
  • For more about setting up NumberSync, visit the NumberSync support page.

For setup instructions, see the NumberSync guide.

NumberSync works even if your Apple iPhone is turned off or your Apple devices are on different Wi-Fi networks. With NumberSync, the synced devices just need to have access to the Internet with a Wi-Fi, wired broadband, or AT&T mobile broadband connection.

There are no voice airtime use charges when you use NumberSync to make calls to or from the U.S., Puerto Rico, or the U.S. Virgin Islands. For international calls, international long-distance rates apply based on your smartphone’s rate plan or International Long Distance package.

Standard data charges under your tablet’s rate plan apply when you use NumberSync over the AT&T mobile broadband network. This includes standard rates in the U.S., Puerto Rico, and the U.S. Virgin Islands. It also includes international roaming data rates when traveling abroad.

Yes. You can make calls using NumberSync by connecting to the Internet through an international Wi-Fi hotspot. NumberSync calls to domestic numbers incur no voice airtime or usage charges. Calls to international numbers incur international long-distance charges based on your smartphone rate plan or international long-distance package.

You can sync up to 5 compatible devices with NumberSync.

Yes, if all of the devices have NumberSync turned on, they will all ring. You can manually turn NumberSync off for each device.

No. NumberSync will not support calls over TTY devices, including 911 calls. To reach 911 service, persons with communications disabilities may do one of these: (1) Call 911 directly using a TTY from a wireless phone over the cellular network or from a landline telephone. (2) Send a text message to 911 directly (in areas where text-to-911 is available) from a wireless device. (3) Use relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone. (4) Use relay services to place an IP Relay or IP CTS call over a cellular data or other IP network. View RTT progress (PDF).

Because NumberSync is available on compatible devices, it is available for use by your CRUs unless otherwise blocked by you (or another authorized order placer for your company). To block an individual CRU from enabling NumberSync for Apple on his/her compatible iPhone (which will block any “twinning” with a qualified secondary Apple device for the purpose of making and receiving calls on the secondary device using the iPhone’s cellular telephone number), you can request a blocking feature to be added to the CRU line either at the time of purchase or you can add the feature yourself at a later date using the account management tools available through Premier Online Care. If, however, you desire to block NumberSync for all of your CRU lines, then you should contact your AT&T sales representative or AT&T Customer Care at 800-331-0500 to request application of the appropriate blocking feature at the foundation or billing account level. Once applied to a CRU line, the blocking feature will automatically remove any existing twinning relationship established for the CRU number(s). The applicable blocking feature code that you may add via Premier Online Care is:

NumberSync for Apple blocking feature code: SPHNBL

In the event your employee has a CRU line associated with a NumberSync-enabled CRU iPhone, and the employee leaves your company, you can utilize the blocking feature described above to break an existing “twinning” relationship with his/her secondary Apple device and thus prevent him/her from making/receiving calls on such Apple device using your CRU iPhone’s cellular telephone number. To redeploy an existing CRU iPhone to a new user or change its cellular telephone number, please contact your sales representative or AT&T Customer Care.

Terms and conditions: Apple
NumberSync for Compatible Apple Devices: Available for voice calls only. Requires iPhone 6, 6 Plus or newer model running iOS 9.3 or later on AT&T postpaid wireless account & with AT&T Wi-Fi Calling enabled. For Wi-Fi Calling set-up & restrictions, visit att.com/wificalling. Device Limit: Sync up to 5 devices. Voice Charges: Calls to international numbers using NumberSync are subject to international rates consistent with smartphone's rate plan or international package. See [here] for information on pay-per-use rates and available packages for international calls from the U.S. and for roaming when traveling abroad. Data Charges: When secondary device is not connected to Wi-Fi, calls sent/received using NumberSync count as data, & data usage rates will apply this includes standard data rates in the US, Puerto Rico and USVI and international roaming data rates when traveling abroad. 911 Calls. If you cannot be located using location information obtained from your device, 911 calls will be routed based on the address you provide in the NumberSync settings of your device. 911 calls are not supported outside the US, Puerto Rico, or USVI. 911 Calling with TTY & Real-Time Text: Due to technical limitations, NumberSync cannot be used with TTY devices and cannot support 911 calls over TTY devices. Persons with communications disabilities can use Real-Time Text (att.com/RTT) as an alternative. 911 services can be reached by either: (1) calling 911 using Real-Time Text, or (2) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (3) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (4) using relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone, or (5) using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network. Additional restrictions: NumberSync cannot be used to initiate calls to 211, 311, 511, or 811. Not compatible with Smart Limits, Ringback Tones, OfficeDirect, or OfficeReach. Real-Time Text is not supported on all secondary devices like wearables and computers. Go to att.com/RTT for more information on how to use Real-Time Text. Additional Information: See the FAQ above.

Android tablets

NumberSync for Android tablets

With NumberSync, you can use your mobile number to make and receive calls on your tablet. Use the same number your friends, family, and colleagues already know. NumberSync works even if your smartphone isn’t with you, nearby, or powered on.

  • Voice and video calling: with NumberSync, you have two ways to call.
  • One number: calls from your tablet display as your mobile number.
  • Simultaneous ring: calls to your mobile phone ring all synced devices at the same time.

*Data rates may apply. Texting requires use of the AT&T Messages app.

NumberSync for Android tablets
Devices that support NumberSync for Android tablets

Devices that support NumberSync for Android tablets

To use NumberSync for tablets, you'll need a smartphone that's enabled for AT&T HD Voice. Visit HD Voice devices for a list of compatible devices and more details.

To use video calling on your tablet, you need a smartphone that supports AT&T Video Call.

Select shop now to purchase a NumberSync compatible tablet.

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FAQ for NumberSync Android tablets

No. NumberSync will not support calls over TTY devices, including 911 calls. To reach 911 service, persons with communications disabilities may do one of these: (1) Call 911 directly using a TTY from a wireless phone over the cellular network or from a landline telephone. (2) Send a text message to 911 directly (in areas where text-to-911 is available) from a wireless device. (3) Use relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone. (4) Use relay services to place an IP Relay or IP CTS call over a cellular data or other IP network.

NumberSync allows you to sync your AT&T smartphone number with an Android® tablet to make and receive voice and video calls, using your smartphone number as the caller ID.

To use NumberSync, you need:

  • An AT&T smartphone with HD Voice service enabled (for voice-only service)
  • An AT&T Video Call-capable smartphone for video calling on the tablet
  • An eligible tablet designed to be used with AT&T service
  • Access to a broadband Internet connection (Wi-Fi, AT&T mobile broadband, or wired broadband) for your tablet

Note: When using Wi-Fi, call quality may vary depending on the strength of the Wi-Fi network.

For setup instructions, see the NumberSync guide for Android tablets.

There is no additional cost for using NumberSync.

There are no voice airtime use charges when you use NumberSync to make calls to or from the U.S., Puerto Rico, or the U.S. Virgin Islands. For international calls, international long-distance rates apply based on your smartphone's rate plan or international long-distance package.

You also will be billed standard data charges under your tablet’s plan if you use NumberSync over the AT&T mobile broadband network. This includes standard rates in the U.S., Puerto Rico, and the U.S. Virgin Islands. It also includes international roaming data rates when traveling abroad.

Yes, if you are connected to the Internet you can make calls. Calls you make outside the United States are charged as follows.

You can sync up to 5 compatible devices with NumberSync.

Yes, if all of your devices have NumberSyncSM turned on, they will all ring. You can manually turn NumberSync off for each device by following the instructions in the support article about NumberSync for Android tablets.

Because NumberSync is available on compatible devices, it is available for use by your CRUs unless otherwise blocked by you (or another authorized order placer for your company). To block an individual CRU from enabling NumberSync for Android Tablets on his/her qualified smartphone (which will block any “twinning” with a compatible Android tablet for the purpose of making and receiving calls on the secondary device using the smartphone’s cellular telephone number), you can request a blocking feature to be added to the CRU line either at the time of purchase or you can add the feature yourself at a later date using the account management tools available through Premier Online Care. If, however, you desire to block NumberSync for all of your CRU lines, then you should contact your AT&T sales representative or AT&T Customer Care at 800-331-0500 to request application of the appropriate blocking feature at the Foundation or Billing account level. Once applied to a CRU line, the blocking feature will automatically remove any existing twinning relationship established for the CRU number(s). The applicable blocking feature code that you may add via Premier Online Care is: NumberSync for Android Tablets

NumberSync Android tablets blocking feature code: NBSSBLCK

In the event your employee has a CRU line associated with a NumberSync-enabled CRU smartphone, and the employee leaves your company, you can utilize the blocking feature described above to break an existing “twinning” relationship with his/her secondary Android tablet and thus prevent him/her from making/receiving calls on such tablet using your CRU smartphone’s cellular telephone number. To redeploy an existing CRU smartphone to a new user or change its cellular telephone number, please contact your sales representative or AT&T Customer Care.

Terms and conditions: Android tablets
NumberSync for Compatible Android Tablets: Voice calling requires smartphone on AT&T postpaid wireless account & set up for HD voice. Video Calls: Must have video call capable smartphone to make/receive video calls on tablet using NumberSync. Device Limit: Sync up to 5 tablets. Voice Charges: Calls to international numbers using NumberSync are subject to international rates consistent with smartphone’s rate plan or international package. See att.com/global for information on pay-per-use rates and available packages for international calls from the U.S. and for roaming when traveling abroad. Data Charges: When tablet is not connected to Wi-Fi, voice & video calls sent/received using NumberSync count as data, & data usage rates will apply—this includes standard data rates in the US, Puerto Rico and USVI and international roaming data rates when traveling abroad. 911 Calls. If you cannot be located using location information obtained from your tablet, 911 calls will be routed based on the address you provide in the NumberSync settings of your tablet. 911 calls are not supported outside the US, Puerto Rico, or USVI. 911 Calling with TTY & Real-Time Text: Due to technical limitations, NumberSync cannot be used with TTY devices and cannot support 911 calls over TTY devices. Persons with communications disabilities can use Real-Time Text (att.com/RTT) as an alternative. 911 services can be reached by either: (1) calling 911 using Real-Time Text or (2) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (3) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (4) using relay services to place a TTY or captioned telephone service (CTS) call from a wireless phone over the cellular network or from a landline telephone, or (5using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network. Additional restrictions: NumberSync cannot be used to initiate calls to 211, 311, 511, or 811. Not compatible with Smart Limits, Ringback Tones, Unified Messaging, OfficeDirect, or OfficeReach. Additional Information: See FAQ above.

Wearables

NumberSync for wearables

NumberSync for wearables

NumberSync from AT&T gives you the freedom to use your primary mobile phone number on your compatible smartwatch. Your phone doesn’t even need to be nearby or turned on.

  • Leave the phone behind: use your mobile number to make and receive calls and text messages on your smart watch, even when it’s outside of Bluetooth® range.
  • One number: calls and texts from your smartwatch will display as your mobile number.
  • One voicemail: check your smartphone voicemails from your synced smartwatch.

Note: text messages to and from your wearable count as data and data rates apply.

Devices that support NumberSync for wearables

To use NumberSync for wearables, you need a smartphone that’s been enabled for AT&T HD Voice. Visit att.com/hdvoice for a device listing and more details.

Currently, we offer NumberSync on:

To learn more about the NumberSync service with an Apple Watch Series 3 with cellular, go to the Apple Watch (cellular) segment.

Devices that support NumberSync for wearables

FAQ for NumberSync for wearables

NumberSync for wearables lets you use your smartphone mobile number on your wearable device. Now you can make and receive calls, and send and receive text messages on your wearable. The best part is that you don’t need to stay close to your phone to use NumberSync.

You need the following:

  • An AT&T postpaid wireless account that’s been set up for AT&T HD Voice
  • An AT&T HD Voice-compatible smartphone
  • A wearable device that supports NumberSync and has eligible AT&T wireless service

There’s no additional cost beyond that of the wireless rate plans for your wearable device and smartphone. Note that data rates, rather than messaging rates, apply when you use NumberSync to send and receive text messages.

You can sync up to 5 wearable devices to your AT&T mobile number.

You can use NumberSync for wearables in the U.S., Puerto Rico, and the U.S. Virgin Islands, as well as when roaming abroad. If you’re outside the AT&T domestic coverage area, calls from your wearable show your wearable’s number, not your smartphone number. When roaming, the voice and data roaming rates for your wearable rate plan or international travel plan will apply.

No, they don’t. You can use NumberSync on your compatible wearable even if your smartphone is in a different location or turned off.

No, it’s not available yet for customers with smartphones on prepaid service. Remember, you need to have a compatible smartphone and wearable, and your smartphone account must be set up for AT&T HD Voice.

It's easy to set up and manage your service through myAT&T. You can log in to the myAT&T smartphone app, or use the link below.

Log in to NumberSync

Note: the manufacturer of your wearable device may also provide unique steps to sync your mobile phone and wearable.

Yes, with Android Wear for iOS, you have the ability to sync the LG Watch Urbane 2nd Edition LTE smart watch. This provides call syncing capability; however, with messaging, syncing is limited. AT&T Messages Backup & Sync (AMBS) does not sync your text messages with your iPhone nor can you access iMessages® from the smart watch.

For the best possible experience while using the NumberSync for wearables service with iPhone, you’ll need to turn off iMessage in order to receive all text messages on the smart watch. On your iPhone, go to settings, messages, iMessage and select off. When not utilizing NumberSync for wearables, you can choose to turn iMessage back on.

Because NumberSync is available on compatible devices, it is available for use by your CRUs unless otherwise blocked by you (or another authorized order placer for your company). To block an individual CRU from enabling NumberSync for wearables on his/her smartphone (which will block any “twinning” with a compatible wearable device for the purpose of making and receiving calls on the wearable device using the smartphone’s mobile number), you can request a blocking feature to be added to the CRU line either at the time of purchase or you can add the feature yourself at a later date using the account management tools available through Premier Online Care. If, however, you desire to block NumberSync for all of your CRU lines, then you should contact your AT&T sales representative or AT&T Customer Care at 800-331-0500 to request application of the appropriate blocking feature at the foundation or billing account level. Once applied to a CRU line, the blocking feature will automatically remove any existing twinning relationship established for the CRU number(s). The applicable blocking feature code that you may add via Premier Online Care is:

NumberSync for wearables blocking feature code: MSSIB

In the event your employee has a CRU line associated with a NumberSync-enabled CRU smartphone, and the employee leaves your company, you can utilize the blocking feature described above to break an existing “twinning” relationship with his/her secondary wearable device and thus prevent him/her from making/receiving calls on such wearable device using your CRU smartphone’s cellular telephone number. To redeploy an existing CRU smartphone to a new user or change its cellular telephone number, please contact your sales representative or AT&T Customer Care.

Already have your smartwatch set up with NumberSync for wearables?

Manage NumberSync

Already have your smartwatch set up with NumberSync for wearables?

Apple Watch (cellular)

AT&T NumberSync for Apple Watch (cellular)

A complimentary feature from AT&T, gives you the freedom to use your primary iPhone number on your connected Apple Watch. Your phone doesn't even need to be nearby.

AT&T NumberSync for Apple Watch (cellular)

What are the benefits?

  • Convenience: make and receive calls from whichever NumberSync wearable device you choose.
  • Freedom: use your mobile number with multiple devices and it works even if your smartphone is turned off.
  • Familiarity: call recipients can recognize your call even when you're not using your phone because your smartphone number is displayed.

What is required?

  • HD Voice activated iPhone on iOS 11 or newer with AT&T post-paid wireless service that includes voice, messaging and data
  • A NumberSync for Apple Watch (cellular) compatible wearable device
  • An AT&T wireless plan that includes voice and data for your compatible Apple Watch
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FAQ for NumberSync for Apple Watch (cellular)

NumberSync for Apple Watch (cellular) lets your watch work on the AT&T domestic cellular network1. You can talk and text2 from your watch using your AT&T iPhone number and cellular data.

1Must complete NumberSync setup for watch to have access to the AT&T cellular network. Watch must be synced with an HD-voice activated iPhone on the same AT&T postpaid wireless account. Voice/data charges: calls to international numbers using NumberSync are subject to international rates consistent with rate plans or international package. When watch is not connected to Wi-Fi or Bluetooth, voice/data charges will apply to usage over the cellular network and will be deducted from your wireless plan for your watch. Watch does not support roaming.

2SMS/MMS text messaging requires that your synced smartphone must be powered on so SMS/MMS messages may be forwarded to your wearable. iMessage must be enabled and your smartphone must be connected to the AT&T network via either a cellular or Wi-Fi connection. If using a Wi-Fi connection, your smartphone must have Wi-Fi calling activated.

Once your watch is synced, NumberSync for Apple Watch (cellular) allows your watch to automatically connect to the AT&T domestic cellular network, even when there is no available Wi-Fi network or your iPhone is not nearby.

NumberSync for Apple Watch (cellular) works where the AT&T domestic network is available (U.S., Puerto Rico, and the U.S. Virgin Islands). Calls and texts over Wi-Fi are also supported on the watch. The watch does not support cellular roaming when traveling abroad.

Yes, your watch must be synced with your iPhone to have access to the AT&T cellular service.

There is no additional cost beyond that of the cellular rate plans for the watch and iPhone.

Both NumberSync for Apple Watch (cellular) and NumberSync for Apple let you turn other Apple devices into additional phones that all share the same AT&T smartphone number as your iPhone. The difference is NumberSync for Apple Watch (cellular) lets your watch work on the AT&T domestic cellular network.

Yes, you can sync your Apple watch with any iPhone that has been set up for AT&T HD Voice on your billing account. You can also sync your Apple Watch to an iPhone on a different billing account than your Apple Watch, but you will need to have an AT&T User ID and password for that account to sync your Apple Watch. NumberSync for Apple Watch (Cellular) requires the use of an iPhone set up with AT&T HD voice service running iOS version 11.0 or higher. To learn more about NumberSync service with other smartphones or other watches, go to the Wearables tab.

You can sync up to 3 Apple watches to a single iPhone. The iPhone and all synced watches must each have a cellular rate plan.

You can use data and make and receive calls on your watch even if your iPhone is off. However, in order to send or receive text messages your iPhone must be on and connected to the AT&T network.

2SMS/MMS text messaging requires that your synced smartphone must be powered on so SMS/MMS messages may be forwarded to your wearable. iMessage must be enabled and your smartphone must be connected to the AT&T network via either a cellular or Wi-Fi connection. If using a Wi-Fi connection, your smartphone must have Wi-Fi calling activated.

Yes. You can place a call to 911 from your watch when connected to the AT&T cellular network even if your iPhone is off.

3If you cannot be located using location information obtained from your watch, 911 calls will be routed based on the address you provide in the NumberSync settings of your watch. 911 calls are not supported outside the US, Puerto Rico, or USVI.

Because NumberSync is available on compatible devices, it is available for use by your CRUs unless otherwise blocked by you (or another authorized order placer for your company). To block an individual CRU from enabling NumberSync for Apple Watch (cellular) on his/her smartphone (which will block any "twinning" with a compatible Apple Watch (cellular) for the purpose of making and receiving calls on the watch using the smartphone's mobile number), you can request a blocking feature to be added to the CRU line either at the time of purchase or you can add the feature yourself at a later date using the account management tools available through Premier online care. If, however, you desire to block NumberSync for all of your CRU lines, then you should contact your AT&T sales representative or AT&T customer care at 800-331-0500 to request application of the appropriate blocking feature at the foundation or billing account level. Once applied to a CRU line, the blocking feature will automatically remove any existing twinning relationship established for the CRU number(s). The applicable blocking feature code that you may add via Premier online care is:

NumberSync for Apple Watch (cellular) blocking feature code: TWPBL

In the event your employee has a CRU line associated with a NumberSync-enabled CRU smartphone, and the employee leaves your company, you can utilize the blocking feature described above to break an existing "twinning" relationship with his/her secondary Apple Watch (cellular) and thus prevent him/her from making/receiving calls on such device using your CRU smartphone's cellular telephone number. To redeploy an existing CRU smartphone to a new user or change its cellular telephone number, please contact your sales representative or AT&T customer care.

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