If you see No Service, Searching or SOS on your iPhone or iPad

• Make sure you're in an area with mobile network coverage.
• Turn mobile data off and then back on again. Go to Settings, then tap Cellular or Mobile Data. If you're using an iPad, you may see Settings > Mobile Data.
• If you're travelling internationally, make sure your device has been set up for data roaming. Go to Settings > Mobile Data > Mobile Data Options > Data Roaming.
  

If you see SOS or "SOS only" in the status bar, your device isn't connected to a network, but you can still make emergency calls. This feature is available in Australia, Canada and the United States.

AT&T is phasing out their 3G network. If you see No Service in the status bar of your device and you have an iPhone 5s, iPhone 5c or earlier, or an iPad 2 Wi-Fi + Cellular or earlier, contact your network provider to discuss your options. If you have an iPhone 6 or later or an iPad (3rd generation) or later, follow these steps:

1. Update your iPhone or iPad to the latest version of iOS or iPadOS.
2. Go to Settings > Mobile Data. Then:
   • For iPhone, tap Mobile Data Options, then turn on Enable LTE.
   • For iPad, turn on LTE.

If you still see No Service after following these steps, contact your network provider.

iPhone and iPad devices that support 5G networks are not affected by the phasing out of 3G networks.

Restart your device. If you're not sure how to do this, follow these steps to restart your iPhone or restart your iPad.

To manually check for and install a network provider settings update:

1. Make sure your device is connected to a Wi-Fi or mobile network.
2. Tap Settings > General > About. If an update is available, you'll see an option to update your network provider settings.
3. To see the version of network provider settings installed on your device, tap Settings > General > About and look next to Network Provider.

If you insert a new SIM card into your iPhone or iPad, you will need to download the network provider settings for your new network provider.

Go to Settings > Mobile Data and check if your mobile line is turned on. If your mobile line is turned off, turn it back on. Then check if you have service.

If you can't see your mobile line in Settings > Mobile Data, you should set up an eSIM or insert a physical SIM card. If you're using a physical SIM card, remove the SIM card and put it back in.

If your SIM card is damaged, doesn't fit in the SIM tray or you've transferred your physical SIM card from another device, ask your network provider for a new SIM card. 

Find out more about removing your iPhone SIM card or iPad SIM card.

Go to Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings. This will also reset Wi-Fi networks and passwords, mobile data settings, and VPN and APN settings that you've used before.

Update your iPhone or iPad to the latest version of iOS or iPadOS.

Issues with your network provider or account may affect your service. Contact your network provider to:

• Verify that your account is active and in good standing.
• Make sure there are no outages in your area.
• Check that your device hasn't been blocked from receiving mobile data services and that it has been set up with the right data plan.

Only your wireless network provider can access and manage details about your account:

• iPhone wireless network providers
• iPad wireless network providers

If your network provider confirms that there's no issue with your account or network, but you still can't connect to a mobile network, contact Apple Support.

If you see an alert next to No Service, find out what you can do.