We’ve phased out our 3G network, starting on February 22, 2022.

If your device doesn't support 4G wireless service and/or is not VoLTE capable, it will no longer work on the AT&T network after the 3G sunset.

To avoid this problem, and stay connected, refer to the information on this page and take a look at this support article for additional help making room for an even better network.

Look on these lists for the model numbers beside your device, to make sure it's supported after the 3G network shuts down:

- AT&T devices (PDF, 470KB).
- Unlocked (or BYOD) devices (PDF, 204KB)

If you did not see your phone make and model on one of these lists, that means it will no longer work by February 2022. You will need to upgrade to a new one.

After February 2022, talk and data services will only work for AT&T Wireless phones and devices that support at least 4G LTE and HD Voice.

Luckily, you can easily upgrade your phone online or make an appointment at one of our stores.

After February 2022, talk and data services will only work for AT&T PREPAID wireless phones and devices that support at least 4G LTE and HD Voice.

Here's how to upgrade an AT&T PREPAID device:

1. Visit one of our stores to get a new phone.
2. Place your SIM card into the new phone. (If your SIM card doesn’t fit, get a new SIM card kit from our store.)
3. Sign in to att.com/myprepaid.
4. Select My Device, then Update Device.
5. Follow the prompts to update your IMEI or SIM card number.

If you used an AT&T Microcell, it won’t work on our current network. An AT&T Cell Booster can help improve cell signals by using your current internet connection to create a 4G LTE cell signal for better indoor coverage¹.

If you need help setting up and using your AT&T Cell Booster; one of our ACE Users - OttoPylot - has created a helpful AT&T Cell Booster Technical Guide for you to use.

¹4G LTE references connected device compatibility only. AT&T Cell Booster is designed to provide 4G LTE voice and data service on compatible devices. To conserve your mobile broadband data usage, use Wi-Fi if available. LTE is a trademark of ETSI.

Why might this be happening?

          A common issue that may be preventing you from making or getting calls is that some or all LTE service may be toggled to off within the device settings.

          This may cause Voice and/or Data service issues, depending on your device.

          Don't worry! You should be able to resolve this issue with just two troubleshooting steps.

Step One: Confirm Compatibility

          Determine if your device is HD Voice-capable. You may also see this referred to as LTE Calling, VoLTE or Voice over LTE.

          If it is not: You will need an HD Voice-capable device.

          If it is, but it's not AT&T branded: You may still need to update your device's software.

          We can help you Check for software updates and update your device.

Step Two: Check Settings

          How to check your settings on an Apple Devices, depending on your Software Version:

        •  Software Version 14.x - 15.0: Go to...
            -  Settings
            -  Cellular
            -  Cellular Data Options
            -  Voice & Data
            -  LTE
            -  Select the LTE option.
            -  Then power cycle your device.

        •  Software Version 13.x: Go to...
            -  Settings
            -  Cellular
            -  Cellular Data Options
            -  Enable LTE
            -  Select the LTE option.
            -  Then power cycle your device.

        •  Software Version 8.x - 12.x: Go to...
            -  Settings
            -  Cellular
            -  Cellular Data Options
            -  Enable LTE
            -  Voice & Data
            -  Select Voice & Data option.
            -  Then power cycle your device.

          How to check your settings on an Android Device: Go to...
            -  Settings
            -  Connection
            -  Mobile networks
            -  Enhanced LTE services
            -  Select on
            -  Then power cycle your device.

If you received a text message, letting you know your replacement device will be automatically activated, there's nothing that you need to do. Your device should automatically be activated in 14-days.

If you choose, you can also request to delay that activation, one time, by 7 calendar days.

For additional information and more help with the 3G shutdown, please refer to Act now – 3G is gone.

5G+ delivers lightning-fast 5G service and improved connectivity. It's available in select high-speed zones and venues in over 20 states across the U.S.

Check to see if 5G is available in your area.

Check out all of our 5G offers to find the best phone for you.

Shop 5G phones.

All AT&T Unlimited plans include 5G, ActiveArmor^SM security with spam and fraud call blocking, and more!

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