- If cellular data is not working on your iPhone after iOS 26 update, there are several ways to potentially resolve the issue.
- To fix cellular data problem on iOS 26, try toggling both Airplane mode and Mobile Data in the Control Center and reseating your SIM card.
- Here are eight of the top ways to fix your iPhone when your cellular data isn’t working after iOS 26 update.
It’s the mundane problems with technology that are the most frustrating. Your iPhone is on and seemingly connected, for example, but you can’t get data in any apps and you see an error message in Safari that your phone isn’t connected to the internet.
Why is your iPhone cellular data not working on iOS 26? Let’s look at these easy ways to fix your iOS 26 cellular data issue now.
Make Sure You Haven’t Exceeded Your Mobile Data Limit
If you’re on a limited internet data plan, ensure you haven’t exceeded the allowed data limit. Some carriers allow you to continue using the internet at a fee even after you’ve used up the allowed data, while others forbid internet access.
If this is the cause, you’ll need to reactivate your mobile plan or top up your quota, then you’re good to go! Cellular data should start working on your iPhone immediately. Contact your carrier’s support (AT&T, Verizon, T-Mobile) if you have issues doing so, and consider limiting your data usage in the future to avoid running out again.
Turn off your Wi-Fi
Sometimes your iPhone can get caught between a Wi-Fi network and cellular, and stick with Wi-Fi even when that’s the wrong choice. If you are outside your home, for example, you might be just outside the practical range of your Wi-Fi network, and your iPhone should switch over to cellular data. But because the phone can still connect to your Wi-Fi network — barely — it stays connected, even though it can’t exchange any data. The remedy? Go to Settings ⇒ Wi-Fi. Tap the Wi-Fi toggle to temporarily disable it. Now your iPhone will be forced to switch over to cellular data and use that instead.
Toggle Airplane mode
While there are a lot of reasons cellular data may not be working after iOS 26 update, one quick and easy trick that often gets it working again is to simply toggle your wireless connection off and back on again. Go to Settings and look for the Airplane mode toggle. If it’s already on, that is probably your problem right there — when Airplane Mode is turned on, Cellular Data is automatically turned off on an iPhone. But if it’s off, turn it on, wait a few seconds, and then turn it off.
Toggle your Mobile Data setting
Similarly, disabling and re-enabling cellular data sometimes helps fix minor glitches. This gives your phone a fresh chance to re-establish an internet link. It’s also possible that mobile data was accidentally toggled off on your iPhone even if Airplane mode is not enabled. Go to Settings and tap Cellular. If Cellular Data is off, tap it to turn it on. Otherwise, tap it to disable, wait a moment, and tap it again to turn it back on. Now test your internet connection and see if that solved your problem.
Check for a carrier setting update
Our next step when iPhone Cellular Data is not working on iOS 26 is to check for a carrier settings update. Apple and your wireless carrier release updates in order to help your iPhone connect to your wireless carrier’s network more efficiently. A problem can occur if your cellular provider has recently updated its configuration and the changes failed to update automatically on your phone for some reason.
You can manually check for a carrier settings update by going to Settings ⇒ General ⇒ About. If there’s a carrier update available, you’ll be prompted to install it now. Since cellular data is not working on your iPhone, please make sure that your device is connected to a working Wi-Fi before checking for a carrier settings update.
Reseat your SIM card
If your iPhone has a physical SIM card, you might need to reseat the SIM card to ficx iOS 26 cellular data issues. It’s not hard to do this, but you will need to find the SIM card removal tool that came with your phone. If that’s no longer around, you can also use a thin paper clip. Insert the tool into the hole near the SIM card tray and push gently but firmly until the tray pops out. Make sure the SIM card is seated properly in its tray and then carefully reinsert it.
Restart your iPhone
If nothing above has worked, try to restart your iPhone. This should clear out any temporary glitches in iOS 26 blocking your mobile data, and only takes a few minutes to shut it off and then turn it back on again.
To turn off your iPhone, go to Settings ⇒ General ⇒ Shut Down. Drag the Slide to Power off slider from left to right to turn off your iPhone. Wait a few seconds, then press and hold the side button until the Apple logo flashes onto the center of the screen.
Reset your network settings
If Cellular Data still doesn’t work on your iOS 26 device, it could be a result of corruption in your phone’s network settings, which might be cleared up by resetting your network settings. Save this troubleshooting step for last, because when you reset your network settings, all saved networks, paired Bluetooth devices and Wi-Fi passwords will be erased, so you’ll need to manually reconnect to all your favorite networks.
Go to Settings ⇒ General ⇒ Transfer or Reset iPhone ⇒ Reset ⇒ Reset Network Settings. You may have to enter your passcode to proceed.
Solved: iPhone Cellular Data Not Working on iOS 26
We’ve seen how to fix the issue of your iPhone mobile data not working after iOS 26 update. To rule out issues, first check whether you have an active mobile plan with sufficient data left. Also, ensure that your device’s airplane mode is turned off.
If your iPhone still can’t connect, Apple advises you to contact your carrier to see if there are other causes. For example, an outage in your area might cause all connections to fail. In case your carrier responds that there’s no problem with your account or network, you’ll have to reach out to Apple Support to resolve the issue. It may be a problem with your iPhone.