How to Fix Cellular Data Not Working On iPhone after iOS 17 update

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If iPhone Cellular Data is not working after iOS 17 update, the most likely reason is that the system’s network settings are modified by iOS update, or the updated system itself has bugs. But in any case, as long as it’s not a hardware problem, you can fix it yourself. In this article, we will show you how to solve the problem of iPhone Cellular Data not working after iOS 17 update.

**Please note:** The solutions explain in this article apply to all iOS 17 supported devices including: iPhone 14, iPhone 13, iPhone 12, iPhone 11, iPhone XR, iPhone XS, and iPhone XS Max.

The typical symptoms

On top of the obvious issue where you are unable to get cellular data such as 5G, LTE, 4G, and 3G, you may see any of the following errors:

  • Cellular Update Failed: Your iPhone cannot make and receive calls or access cellular data until it has been updated.
  • An update is required to use cellular data on this iPhone.
  • Could not activate cellular data network. Turn on cellular data or use Wi-Fi to access data.
    This is just a subset of possible error messages. Depending on your situation, you may or may not be able to make and receive calls on top of not being able to access cellular data.

Simple solutions to fix cellular data not working on iOS 17

If you find Cellular data not working after iOS 17 update, here’s a list of solutions:

Disable and Enable Cellular Data

This is the easiest fix when cellular data is not working after iOS 17 update. Disable and enable cellular data. Head over to Settings > Cellular > Cellular Data. Tap the switch to turn it off. Wait a few seconds and again tap to turn it back on.

Restart your iPhone

As unexplainable as it may be, we find most iOS issues are fixed with a simple reboot. A plethora of possible discrepancies could cause your mobile data problem in iOS 17, and chances are that if you are here looking for answers, your phone complication is a bit more complex, but it doesn’t hurt to remind you to try the good ol’ restart. It just might work.

  • On iPhone XR, iPhone XS, iPhone 11, iPhone 12, iPhone 13, iphone 14 or higher, hold down the Power and either of the Volume button until a power off slider appears.
  • On iPhone SE (second generation) or higher, hold down the Power button, then drag the power off slider to power off your iPhone. Once the screen turns off, hold down the Power button to power it back on.

Turn Airplane Mode on and off

This can sometimes help reset your cellular data. The toggle for Airplane Mode can be found right in your Settings app, or in Control Center.

Take out your SIM card and put it back in

SIM cards can move around, and sometimes pins can get out of line, causing mobile data to stop working, as well as a [“No SIM card Installed”]( error on occasion. It’s a good idea to play with the SIM card a bit if the steps above don’t work for you. Pull it out and reinsert it. Maybe try to clean it a bit. It won’t hurt to try! It’s an excellent way to fix iOS 17 cellular data issues.

Using a SIM tool or any alternative, pop out your sim card slot on the side of your iPhone, wait a few seconds, and then reinsert it.

Also, your Sim card could be damaged. In such a situation, reach out to your service provider to replace the SIM.

Check for a carrier update

iPhone carrier providers such as AT&T, Sprint, T-Mobile, and Verizon etc., frequently release updates. It is important to install these updates to enhance your cellular network efficiency.

You may see a notification on your iPhone asking you to install Carrier Settings Update, whenever a new update is available. However it’s possible to check and install carrier settings update manually.

To check for a carrier update:

  1. Go to the Settings app and select General.
  2. Tap About.
  3. If there is an update available, you’ll immediately see a prompt that says Carrier Settings Update and asks whether you want to proceed with the update now. Install any updates that show up here.

Update your iPhone to the latest version

Updating your device to the latest iOS 17 version may fix glitches that may disrupt connection to cellular data in your iPhone. To update your iPhone, go to Settings > General > Software Update. If it says that your software is up to date, then move on to the next solution.

Turn Off VPN

If you are using or are subscribed to a VPN on your iPhone, in some rare cases, it can also prevent your cellular signal from connecting. Having a VPN can be used for things like staying safe on public Wi-Fi or bypassing geo-restricted viewing restrictions. Should you find that you are having trouble connecting to your cellular signal, disable your VPN temporarily and see if that helps resolve the connection issue.

It might also help to disable the VPN by going into the VPN settings and toggling your app of choice to “off” and then doing a forced restart. With the forced restart, you can be sure that you are completely disconnected. Now see if your cellular data is working, and if not, move to the next solution.

Check date and time settings

Make sure that the date and time on your iPhone are set correctly for your time zone. Here’s how:

  1. Launch the Settings app on your iPhone.
  2. Tap on General.
  3. Tap Date & Time.
  4. If the date and time are incorrect, update them or turn on the option to set date and time automatically.

Reset your Network Settings

If cellular data is still not working, it may mean some extraneous setting was changed after iOS 17 update. It is likely related to the network, so resetting your network settings to factory defaults might fix the issue. Keep in mind, this will erase all of your saved Wi-Fi networks and passwords, cellular settings, and VPN and APN settings. Simply follow these steps to reset network settings on iPhone:

Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings. Enter your password when prompted.

Outages and reception

Are you out in the middle of nature? Maybe you’re in a concrete building. Or you’re simply going through an area with spotty reception. There is always a chance you’re unreachable to the network, which will cause problems with your mobile data.

If you’re always having problems with signal in a common location, like a room, your office, or any place you frequent, you might want to invest in a signal booster.

Also, consider that, while rare, carrier networks can go down too, causing service outages. We recommend []( to check when services are down. The website collects consumer reports and lets you know if there is an outage. There’s also a live map to see if the problem is local. Go in there, type in your Carrier, and hit the search button. If the network is down, all you can do is wait.

Contact your carrier

In some cases, the issue could be at your mobile data carrier end. Try to reach out to your service provider to check about proper cellular settings or if any outages in your area that might be the cause of unresponsive iPhone cellular data.

Get help from Apple

If you continue to have the problems, take your iPhone to an Apple Authorized Service Provider or make a Genius Bar reservation at an Apple Store, as there may be a corrupted hardware component.

Cellular not working after iOS 17 update? Problem fixed

Did you fix your iOS 17 cellular problems? As someone who has dealt with this issue firsthand, it can be very frustrating. Thankfully these steps have resolved the issue for many people. If not, you can always get help directly from Apple.

Did our solutions fix your iOS 17 cellular issue? Did another solution work that we didn’t mention? Drop a comment and let us know!

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GeeksModo Staff is a team of iPhone, iPad, Mac and Apple Watch experts led by Moses Johnson. We're passionate about all things Apple!