Fix: No Service After iOS 17.3.1 Update (No Cellular Data)

Fix No Service After iOS 17.3.1 Update

The iOS 17.3.1 update is causing problems for certain users, with some of these problems involving the iPhone not working or connecting to a network provider. Moreover, the update has become a critical issue for certain iPhone users. Fortunately, solutions are available. Let’s explore.

How to Fix No Service After iOS 17.3.1 Update

The best solution to this is to perform a force restart on your iPhone:

  1. Press then quickly release the Volume Up button.
  2. Press then quickly release the Volume Down button.
  3. Press and hold the Side button.
  4. Then, when the Apple logo appears release the side button.

But if this doesn’t work, try the following:

1. Delete Your VPN Profile

There are reports that deleting your VPN and then restarting your iPhone can solve your situation. If you use your iPhone for work, you should double-check your VPN settings even if you don’t personally use one, as certain professional apps, such as Microsoft InTune, may utilize one.

Time needed: 2 minutes

To delete your VPN, follow these steps:

  1. From your iPhone, go to Settings.

  2. Tap General.

    iPhone not working 17.2.1 Update Tap General

  3. Scroll down and select VPN & Device Management.

    iPhone not working 17.2.1 Update Tap VPN and Device Management

  4. Click VPN.

    iPhone not working 17.2.1 Update Tap VPN

  5. Select Your VPN.

  6. Tap Delete VPN and confirm.

  7. If your VPN has an app, you want to try uninstalling it as well. Find the app on your Home screen, long press it and select Delete App. You will need to confirm you decision.

2. Reset Network Settings To Fix No Cellular Data after iOS 17.3.1 Update

Note icon NOTE
Resetting your network settings will delete all of your network information. This includes Wi-Fi passwords and information about your VPNs.

If you don’t have a VPN or the above solution didn’t work for you. You may want to try resetting your network settings.

  1. Open Settings and tap General.
    iPhone not working 17.2.1 Update Tap General
  2. Scroll down and select Transfer or Reset iPhone.
    iPhone not working 17.2.1 Update Tap Transfer or Reset iPhone
  3. Tap Reset.
    iPhone not working 17.2.1 Update Tap Reset
  4. Tap Reset Network Settings. Enter your passcode.
    iPhone not working 17.2.1 Update Tap Reset Network Settings
  5. Confirm your decision.

3. Restore iPhone from Backup

If you have a backup of a previous version of iOS, you can restore your iPhone to that backup. Remember that you cannot create a new iCloud backup at this point, as you will still be on iOS 17.3.1. If you do need to restore your iPhone from a backup, check out our full guide here.

How To Fix No Cellular Data after iOS 17.3.1 Update

Unfortunately, one of the most effective solutions to this problem is speaking to your service provider and replacing your eSIM or SIM card. Consider speaking with Apple Support to see what they can do for you.

While few of these solutions are ideal, it’s important to realize that if you are experiencing these issues, the right solution may vary depending on your situation. Fortunately, Apple is expected to soon rollout iOS 17.3.1 and hopefully resolve this pertinent issue.

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