If you see a Cellular, Ultra Wideband, or Apple Pay issue

When one of these messages appears, iOS or iPadOS diagnostics detected an issue on your iPhone or iPad.

Learn about these messages

If a red badge with a number appears on your Settings app icon:

  1. Open the Settings app.

  2. Tap the message to learn more about it.

Cellular Issue detected

If a Cellular Issue message appears, there was an issue updating the cellular communication features or a temporary cellular service issue occurred on your iPhone or iPad.

iPhone screen displays a Cellular Issue message, stating the phone can't access cellular data.

Run cellular diagnostics

To learn more about your cellular issue, run cellular diagnostics.

You must have an iPhone model running iOS 18 or later to run diagnostics in the Apple Support app.

  1. Connect to Wi-Fi and make sure you download the latest version of the Apple Support app.

  2. Open the Apple Support App.

  3. Tap Cellular service.

  4. Tap Run Diagnostics.

  5. Tap Agree for Terms and Conditions.

  6. Follow the recommendations provided by Diagnostics.

Ultra Wideband Issue detected

If this message appears on iPhone models that support Ultra Wideband, there was an issue updating the Ultra Wideband feature of your iPhone.

iPhone screen displays an Ultra Wideband issue message stating the phone can't use Ultra Wideband.

Apple Pay Issue detected

If the Apple Pay Issue detected message appears, you won't be able to use Apple Pay or Wallet for payments or access until you reinstall iOS or iPadOS on your device. Some Wallet passes might still be available while payments are unavailable.

iPhone screen displays an Apple Pay Issue message stating the phone can't use Apple Pay.

Follow these steps for Ultra Wideband and Apple Pay issues

  1. Make sure that you have a backup of your iPhone or iPad.

  2. Connect your device to a computer that has the latest version of macOS, iTunes, or Apple Devices. On a Mac with macOS Catalina or later, open a Finder window. On a Mac with macOS Mojave or earlier, open iTunes. On a Windows PC, open iTunes or Apple Devices.

  3. If "Trust this Computer" appears, unlock your device, then tap Trust.

  4. Select your device.

  5. In the Finder or Apple Devices, click General. Or in iTunes, click Summary. Then:

    1. On a Mac: Command-click Check for Update.

    2. On a Windows computer: Control-click Check for Update.

  6. Click Download and Update. Continue by following the onscreen instructions.

Your computer will download and reinstall the current version of software on your device. Don't disconnect your device from your computer until the download completes.

If the message still appears, you might need service. Get service.

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