Cellular Data Keeps Turning Off on iPhone? 10 Fixes!

Updated by Brian Davis on Nov 4, 2026 • Category: iOS Repair
11 mins read

Does your iPhone cellular data keep turning off? Or specifically, cellular data for apps keeps turning off on iPhone? If so, you are not alone. Some users have reported this issue to Apple. And if you are experiencing this issue, this article will be the right place for you. We all can feel that failed cellular data will be a severe problem. Without cellular data, users can not use some apps normally, unless they have access to Wi-Fi. Hence, in order to solve users' questions, we will sort out all possible ways for users to fix iPhone cellular data keeps turning off.

iphone cellular data keeps turning off

Why Does Cellular Data Keep Turning Off on iPhone

Cellular data may keep turning off on your iPhone for several reasons. This can be frustrating, especially when you rely on mobile internet while traveling or away from Wi-Fi. Here are some common causes:

  • 01 iOS Software Glitches: Temporary iOS bugs can cause cellular settings to behave unexpectedly.
  • 02 Incorrect Network Settings: Corrupted network configurations may interrupt your cellular connection.
  • 03 Carrier Issues: Your mobile carrier may experience network outages or SIM-related problems.
  • 04 SIM Card Problems: A damaged, loose, or improperly activated SIM card can cause cellular connectivity issues.
  • 05 Low Power Mode: Certain background activities and network-related functions may be restricted to save battery.
  • 06 Outdated iOS Version: Older software may contain bugs that affect cellular connectivity.
  • 07 Dual SIM Conflicts: Incorrect settings for multiple SIMs or eSIMs may interfere with your mobile data connection.
linkFurther Reading: Detailed Guide on How to Fix 4G Not Working on iPhone

Video Tutorial: Top Ways to Fix Cellular Keeps Turning Off on iPhone

If your iPhone's cellular data keeps turning off unexpectedly, don't worry! The following video tutorial walks you through several simple and effective solutions to fix the issue. Follow the step-by-step instructions to troubleshoot the problem and get your cellular data working properly again.


10 Ways to Fix Cellular Data Keeps Turning Off on iPhone

If cellular data keeps turning off on your iPhone, the problem may be caused by temporary network glitches, incorrect settings, carrier issues, or iOS software errors. Fortunately, there are several ways to troubleshoot it. Start with the simplest solutions below and move on to more advanced fixes if the problem persists.

Fix 1: Turn Airplane Mode On and Off

Toggling Airplane Mode is one of the quickest ways to refresh your iPhone's cellular connection. It temporarily disconnects your device from cellular networks and allows it to reconnect when you turn the feature off.

  • Step 1. Open Settings app on your iPhone.
  • Step 2. Turn on Airplane Mode and wait for at least 15 seconds.
  • Step 3. Turn off Airplane Mode and wait for your iPhone to reconnect to the cellular network.
  • Step 4. Go to Settings > Cellular and check whether Cellular Data stays enabled.

toggle airplane mode

Fix 2: Restart Your iPhone

A simple restart can often resolve temporary software glitches that interfere with cellular connectivity. Restarting your iPhone refreshes its system processes without deleting your data.

  • Step 1. For iPhone without Home button, press and hold the Side button and either Volume button until the power-off slider appears. For iPhone with a Home button, press and hold the Side or Top button instead.
  • Step 2. Drag the slider to turn off your iPhone. Wait about 30 seconds.
  • Step 3. Press and hold the Side or Top button until the Apple logo appears.
  • Step 4. Once your iPhone restarts, turn on Cellular Data and check whether the issue is resolved.

slide to power off iphone

Fix 3: Disable Low Data Mode

Low Data Mode helps reduce mobile data usage by limiting background activities, automatic downloads, and certain network-related tasks. Although it doesn't turn off cellular data itself, disabling it may help if apps appear to lose their internet connection.

  • Step 1. Open Settings > Cellular on your iPhone.
  • Step 2. Tap Cellular Data Options > Data Mode. If you use Dual SIM, you may need to select your cellular line first.
  • Step 3. Select Standard instead of Low Data Mode.
  • Step 4. Return to the Home Screen and check whether your apps can access cellular data normally.

cellular data mode

Fix 4: Enable Data Roaming If Needed

If your iPhone loses cellular connectivity while traveling abroad or outside your carrier's coverage area, Data Roaming may be disabled. Enabling it allows your iPhone to connect to supported partner networks.

  • Step 1. Open Settings > Cellular and make sure Cellular Data is enabled.
  • Step 2. Tap Cellular Data Options. If you're using Dual SIM, select the appropriate cellular line first.
  • Step 3. Turn on Data Roaming.
  • Step 4. Wait for your iPhone to connect to an available network and test your internet connection.

cellular data options 1

note icon Note

Enable Data Roaming only when necessary. Depending on your cellular plan, roaming may result in additional charges. Check with your carrier before turning it on.

Fix 5: Check for Carrier Settings Updates

Outdated carrier settings may cause connectivity problems, including unstable cellular service. Carrier settings updates can improve network compatibility and performance, so it's worth checking whether an update is available.

  • Step 1. Connect your iPhone to a stable Wi-Fi network.
  • Step 2. Open Settings > General > About.
  • Step 3. Wait a few seconds. If a carrier settings update is available, a notification will appear.
  • Step 4. Tap Update and follow the onscreen instructions to install it.

iphone carrier settings update

note icon Note

If no update notification appears, your carrier settings may already be up to date.

Fix 6: Remove and Reinsert the SIM Card

A loose, damaged, or improperly seated SIM card can interfere with your iPhone's cellular connection. If your iPhone uses a physical SIM card, removing and reinserting it may help restore a stable connection.

  • Step 1. Turn off your iPhone before removing the SIM card.
  • Step 2. Locate the SIM tray on the side of your iPhone. Insert a SIM-eject tool or a straightened paper clip into the small hole beside the tray.
  • Step 3. Gently remove the SIM card and inspect it for visible damage or dirt.
  • Step 4. Place the SIM card back into the tray, ensuring it fits correctly, and carefully reinsert the tray.
  • Step 5. Turn on your iPhone and check whether Cellular Data works properly.

reinsert sim card iphone

Fix 7: Force Restart Your iPhone

If a regular restart doesn't work, you can try force restarting your iPhone. This method can help clear temporary system glitches that may affect cellular connectivity, especially when your iPhone becomes unresponsive.

Follow the instructions for your iPhone model:

For iPhone 8 and later, including iPhone SE (2nd generation and later):

  • Step 1. Press and quickly release the Volume Up button.
  • Step 2. Press and quickly release the Volume Down button.
  • Step 3. Press and hold the Side button until the Apple logo appears, then release it.

For iPhone 7 and iPhone 7 Plus:

  • Step 1. Press and hold the Volume Down button and the Side button simultaneously.
  • Step 2. Release both buttons when the Apple logo appears.

For iPhone 6s, iPhone SE (1st generation), and earlier models:

  • Step 1. Press and hold the Home button and the Side or Top button simultaneously.
  • Step 2. Release both buttons when the Apple logo appears.

force restart iphone

Once your iPhone restarts, check whether Cellular Data stays on.

Fix 8: Update iOS to the Latest Version

Running an outdated version of iOS can sometimes cause compatibility problems or unexpected system glitches. Installing the latest compatible iOS update may resolve software-related issues affecting cellular connectivity.

Option 1: Update iOS Directly on Your iPhone

  • Step 1. Connect your iPhone to Wi-Fi and make sure it has sufficient battery power or is connected to a charger.
  • Step 2. Go to Settings > General > Software Update.
  • Step 3. If an update is available, tap Update Now button. Follow the onscreen instructions to complete the update.

update to ios 27

Option 2: Update iOS Using a Computer

If you cannot update your iPhone wirelessly, you can use a computer instead.

  • Step 1. Connect your iPhone to your Mac or Windows PC with a compatible USB cable.
  • Step 2. Open Finder on a Mac running macOS Catalina or later, or the Apple Devices app on a Windows PC. Older systems may use iTunes.
  • Step 3. Select your iPhone and choose Check for Update.
  • Step 4. If an update is available, click Download and Update and follow the onscreen instructions.

ios 27 check for update via finder

note icon Note

Back up your iPhone before installing a major iOS update to protect your important data.

Fix 9: Reset Network Settings

If cellular data keeps turning off despite trying the previous methods, incorrect or corrupted network settings may be responsible. Resetting network settings restores your iPhone's network configurations to their defaults and may help resolve persistent connection issues.

  • Step 1. Open Settings > General on your iPhone.
  • Step 2. Scroll down and tap Transfer or Reset iPhone.
  • Step 3. Tap Reset > Reset Network Settings.
  • Step 4. Enter your iPhone passcode if prompted, then confirm the reset.
  • Step 5. After your iPhone restarts, go to Settings > Cellular, enable Cellular Data, and check whether the issue is resolved.

transfer or reset iphone

note icon Note

Resetting network settings will not delete your photos, messages, or apps. However, it will remove saved Wi-Fi networks and passwords and reset cellular, VPN, and APN settings. You may need to reconnect to Wi-Fi afterward.

Fix 10: Repair iOS with TunesKit iOS System Recovery

If all the above-mentioned ways fail to fix your iPhone, you can try a powerful iOS repair tool. As we can not exclude the system bug as the reason, this tool deserves a try. As the name implies, this tool is designed to generally fix any iOS-related issues. It is highly efficient and works fast.

Here, we want to recommend our product – TunesKit iOS System Recovery. TunesKit is the desktop repair software which supports both Mac and Windows. It can ensure security and efficiency. It is developed to fix more than 150 iOS system issues without any data loss. With simple clicks, it can fix iPhone cellular data keeps turns off. Moreover, it can fix iPhone stuck on update requested, recovery mode, frozen screen, etc. With the help of TunesKit, users can fix all kinds of iOS/iPadOS issues in 1-click and without data loss.

Fix iPhone Cellular Data Issues with TunesKit

Easily repair iOS system glitches that cause cellular data to keep turning off, without erasing your data using TunesKit iOS System Recovery's Standard Repair mode.

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Here's how to Fix iPhone Cellular Data Issues with TunesKit iOS System Recovery

Step 1. Connect iPhone to PC

Firstly, you need to connect your iPhone to the PC by using a USB cable. Then, open TunesKit. Wait for several seconds. TunesKit will detect your device. If done, click iOS System Repair button. On the next page, click the Start button.

main interface v5

Step 2. Select a Repair Mode

Choose Standard Repair to troubleshoot the iOS issue while attempting to preserve your data. Follow the onscreen instructions to proceed.

select mode

Step 3. Download the Firmware Package

Confirm your device information and hit the Download button to download the appropriate firmware package.

download ios 27 firmware win

Step 4. Repair Your iPhone

Once the download is complete, click Start Standard Repair button to begin the process. Keep your iPhone connected until the repair is finished, then check whether cellular data works normally.

ios repaired

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Conclusion

If cellular data keeps turning off on your iPhone, the 10 solutions above can help you troubleshoot and resolve the issue. Start with simple fixes like toggling Airplane Mode, restarting your iPhone, or updating your carrier settings. If the problem persists and appears to be caused by an iOS system glitch, TunesKit iOS System Recovery is worth considering. Its Standard Repair mode is designed to fix various iOS issues without erasing your data, making it a convenient option for troubleshooting stubborn software problems.

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