NumberSync for Samsung Galaxy Watch4 and Watch4 Classic Overview

Learn how to use your Samsung Galaxy Watch4 or Watch4 Classic on our domestic wireless network with NumberSync.

QUICK ANSWER

What’s required to use NumberSync?

  • Samsung Galaxy Watch4 or Watch4 Classic with FirstNet eSIM and the latest software update installed.

  • FirstNet Ready Android smartphone (v7 or later) set up for AT&T HD Voice.

  • FirstNet wireless plan for the smartphone and the Samsung Galaxy Watch.

  • AT&T Messages Backup & Sync (AMBS) enabled on the smartphone.

  • Samsung Galaxy Wearable app downloaded and installed on the smartphone.

  • If your smartphone and Samsung Galaxy Watch are on separate FirstNet billing accounts, you will also need:

    • “NumberSync Cross Ban Twinning for Non-Apple” feature added to the smartphone line.

DETAILED INFO

About NumberSync

With NumberSyncSM for Samsung Galaxy Watch4 and Watch4 Classic, you can sync your Samsung Galaxy Watch with your smartphone and wireless number. Once your watch is set up with NumberSync, you can talk, text, and use cellular data on your watch on our domestic network. That includes the U.S., Puerto Rico, and the U.S. Virgin Islands.

Voice and data usage

The Samsung Galaxy Watch4 and Watch4 Classic connects for talk and data in 2 ways:

  • Bluetooth® - The watch uses Bluetooth to communicate with your smartphone. When you make or receive a call on the watch, your smartphone makes or receives the call but relays it to the watch – like what happens with a Bluetooth headset. The watch uses the same data network as the smartphone it’s paired to.

  • Wireless - When the watch isn't in the range of Bluetooth, it connects to our cellular network for talk and data service. 

Messaging

Want to get text messages on your watch? Make sure your smartphone is powered on and the following are enabled:

  • NumberSync, so you can access our wireless network to get messages on your watch when you're away from your smartphone

  • AT&T Messages Backup & Sync (AMBS) enabled on your smartphone

  • A connection to our cellular network

Samsung Galaxy Watch4 and Watch4 Classic are not rich communication services (RCS) capable and can’t display some RCS msg types. You will receive a notification on the watch to check the smartphone to read these messages.

Billing

The Samsung Galaxy Watch has a FirstNet telephone number and associated rate plan that will appear on your monthly bill. Please remember to complete NumberSync setup to use your watch on the FirstNet cellular network with your smartphone number. With NumberSync active, calls and messages using your watch will display your FirstNet smartphone telephone number.

If you do not have a rate plan for your Samsung watch, you’ll need to have one added.

  • If your watch is for an Agency Paid account, please contact the person that manages the account for your company to activate service and select a rate plan.

  • If your watch is for your personal Subscriber Paid account, you can use FirstNet Central, or contact FirstNet Customer Service at 800-574-7000, to activate service and select a rate plan.

Which plan will be billed for usage?

  Answer or make calls from your watch using Access data from your watch using your
Which plan will be billed 
  Bluetooth
Smartphone with Bluetooth Smartphone
  Cellular network
Watch
Watch

Out-of-network and international calls

In the U.S. - Outside our network

Samsung Galaxy Watch4 and Watch4 Classic don't support calls outside our coverage area.

In the U.S. - International dialing

We support international long-distance calling from the U.S. over our mobile network. Rates are based on the plan you have for your watch. You can find current rates and available international options at https://www.firstnet.com/plans.

Here’s how we charge calls to international numbers when you use our mobile network:

  • If you have an international long-distance package and you call a country in that plan, those rates apply.

  • Have a domestic wireless plan with a reduced international calling rate? If you call a country covered by your plan, those rates apply.

  • Otherwise, we charge pay-per-use rates for international long distance.

Outside the U.S.

  • Calls on the watch when traveling abroad is supported.

  • Calls using Bluetooth are billed to your smartphone plan.

Smartphone and Samsung Watch on separate billing accounts

If your smartphone and Samsung Galaxy Watch are on separate FirstNet billing accounts, you will need to add the “NumberSync Cross Ban Twinning for Non-Apple” feature to the smartphone line at no additional charge.

  • If your smartphone is on an Agency Paid account, please contact the person that manages the account for your company to have the feature added to your smartphone line.
  • If your smartphone is on a Subscriber Paid account, you can add the feature using FirstNet Central. Please use your FirstNet User ID (credentials) that were established during the initial account setup.

  • To add the feature in FirstNet Central:

    1. Login to FirstNet Central.

    2. Select Manage services & billing

    3. From the ‘I want to’ task bar, select Change Features and enter the smartphone wireless number to be worked with, then select Go.

    4. From the Change Features page, select the NumberSync Cross Ban Twinning for Non-Apple feature and select Continue.

    5. Verify the changes to the wireless line are correct and if so, select Submit.

    6. A confirmation page will appear with the change and an email with the change order ID will be sent.

Important details

NumberSync for Samsung Galaxy Watch4 and Watch4 Classic:

You must complete NumberSync setup for watch to have access to the FirstNet cellular network. Watch must be synced with an HD-voice activated smartphone.

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 Bluetooth, voice/data charges will apply to usage over the cellular network and will be deducted from your wireless plan for your watch.

911 Calls:

If 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 U.S., Puerto Rico, or U.S. Virgin Islands.

TTY Limitations for 911 Calls & Real-Time Text:

Due to technical limitations, NumberSync cannot be used with TTY devices or Real-Time Text. Persons with communications disabilities can still reach 911 services by either: (1) calling 911 directly using a TTY over the cellular network or from a landline telephone, or (2) sending a text message to 911 directly (in areas where text-to-911 is available) from a wireless device, or (3) 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 (4) using relay services to place a IP Relay or IP CTS call over a cellular data or other IP network. View RTT progress.

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.