[Fixed] iPhone Showing "No Service" After iOS 18.4.1 Update

Is your iPhone suddenly displaying "No Service" after updating to iOS 18.4.1? You're not alone. A lot of users have encountered the same issue. Don't worry; we're here to help you out. This troubleshooting guide covers why your iPhone loses service after an update and provides several effective solutions.

Why Does iPhone Have No Service After iOS 18.4.1 Update?

It's important to know what causes your iPhone to lose service after the iOS 18.4.1 update. Below are the possible reasons:

• iOS 18.4.1 bugs
• Outdated carrier settings
• Airplane Mode enabled
• SIM Card recognition failure
• Network settings conflict

How to Fix "No Service" on iPhone After iOS 18.4.1 Update

When your iPhone displays "No Service" after updating to iOS 18.4.1, first check the network coverage at your location by moving closer to a window or going outdoors. If this doesn't help, follow the troubleshooting steps below:

1. Update Your iPhone

As mentioned before, bugs in iOS 18.4.1 may cause your iPhone to lose signal. In this case, wait for another iOS update or use tools like BuhoRepair to update your iPhone to a beta version to resolve the "No Service" issue.

BuhoRepair is one of the best iOS system repair tools on the market. It is designed to fix 100+ common iOS issues, including iPhone no service after an update. Here's how it works:

1. Free download and install BuhoRepair on your PC or Mac computer.
2. Connect your iPhone to your computer.
3. Launch BuhoRepair and click Upgrade/Downgrade iOS.

   

4. Click Upgrade Version > Upgrade Now.

   

5. Follow the onscreen instructions to upgrade your iPhone.
6. Once finished, check if the "No Service" message disappears.

2. Disable Airplane Mode

Sometimes, you may accidentally enable Airplane mode on your iPhone. To disable it, swipe down from the top of your iPhone to open Control Center and tap Airplane Mode.

3. Enable Cellular Data

It's also necessary to check whether the Cellular Data is enabled. You can tap its icon in the Control Center, or go to Settings > Cellular, then toggle on Cellular Data.

4. Restart Your iPhone

Restarting your iPhone can fix a variety of minor issues and glitches. No matter what problem your iPhone is having, a restart is always worth a try.

5. Update Carrier Settings

You may see a "No Service" message on your iPhone if your carrier settings are out of date. Just tap Settings > General > About and install any pending carrier updates.

6. Reinsert Your SIM Card

If your iPhone accepts a physical SIM card instead of an eSIM card, ensure you have it properly inserted into your device. The best practice is to remove and reinsert it to check if your iPhone can detect the service.

7. Reset Network Settings

Another troubleshooting method is to reset your network settings. Follow these steps:

1. Go to Settings.
2. Tap General > Transfer or Reset iPhone > Reset > Reset Network Settings.

8. Factory Reset Your iPhone

The last but not least method is to reset your iPhone to factory settings. As you know, this will erase all content and settings on your device. It is not recommended if you don’t have an iPhone backup.

To proceed, first back up your iPhone to iCloud or a computer, then on your iPhone, tap Settings > General > Transfer or reset iPhone > Erase all content and settings.

9. Contact Your Carrier or Apple Support

If all else fails, reach out to your carrier or Apple Support for further assistance.

Last Word

It’s common to see your iPhone display “No Service” after an update, especially on iOS 18. Thankfully, the methods mentioned above can get you out of trouble.

If you're seeking ways to downgrade your iOS to a previous version, check out this article: How to Downgrade iOS 18.4.1 to 18.3.2 [Step by Step].