How to fix ‘Cellular Update Failed’ error on iPhone Xs/Xs Max

The main problem mentioned in this article will be a post-update error on iPhone XS/XS Max devices. It’s related to the cellular data when it stops working after updating to the latest iOS version. If you’d seen an error saying, “Cellular Update Failed” after installing iOS 12.1 version, you should then refer to this walkthrough. Read on to find out what you need to do when encountering this post-update problem on your new iPhone XS/XS Max. Start whenever you want to troubleshoot your device.

How to fix Cellular Update Failed error on iPhone Xs/Xs Max

Before getting started, make sure the signal on your iPhone is good enough. Otherwise, you should contact your network provider to check for temporary network outage, affecting cellular services. If not, try any of these listed solutions below.

Solution 1: Reinstall the SIM card on your iPhone

Many iPhone XS Max users who have encountered this error after updating to the latest version could find a permanent solution just by retaking out and reinstalling the SIM card. You should consider as the first possible solution and give it a try. Here’s how to do so:

  1. Switch your phone off completely to prevent causing any sort of damage to your phone.
  2. Once your device is turned off, put the SIM ejector tool into the small hole on the SIM tray.
  3. Softly push the ejector tool until the SIM card tray protrudes.
  4. Take out the SIM card tray from the phone and then the SIM card from the card slot.
  5. Check out the SIM card for any signs of damage like liquid traces.
  6. If your SIM card looks fine, put it back into the SIM card slot before removing it. Secure your SIM card in place.
  7. Push the SIM tray back into your iPhone until it’s locked.
  1. Power your iPhone back on and then check if the Cellular Update Failed error already disappears.

Solution 2: Disable Cellular Data and enable Airplane mode

Toggling Cellular Data and enabling Airplane mode on your iPhone are also a good solution to get rid of this error. These workarounds will clear out random errors that are having a bad impact on your phone’s network functions. To enable and disable cellular data on your iPhone, simply follow these steps below:

  1. Open Settings app from your Home screen.
  2. Tap on Cellular and toggle the switch on (if it’s OFF). Otherwise, disable it for a few seconds and turn it back on.

This should refresh cellular data services on your device. If it could fix the problem, you should try the Airplane mode trick. It’s been a widely used solution to resolve network-related issues from Wi-Fi to cellular data problems. Here’s how to get it done:

  1. Head to Settings-> Airplane Mode section.
  2. Toggle Airplane Mode switch to ON. This will then disable wireless radios on your iPhone.
  3. Restart your iPhone while the Airplane mode is still on.
  4. After that, return to Settings-> Airplane Mode menu.
  5. Now, toggle the switch to disable Airplane Mode. Wireless radios will be re-enabled.

Now, check if the Cellular Update Failed error is gone. If not, move to the next solutions.

Solution 3:  Update carrier settings on your iPhone

Sometimes, there are settings update available from your carrier, which can also be the key to fixing network errors, including those that occur after an iOS update. Carrier settings updates have small files that are designed to improve network functions remove glitches affecting the network system. To check for any carrier settings update on your iPhone, head to Settings-> General-> About. Wait for a few minutes until there is a carrier settings update notification.

Review the information and then follow on-screen instructions to install carrier settings update on your iPhone Xs/Xs Max.

After the carrier settings update is successfully installed, simply restart your iPhone to apply the recent settings changes as well as refresh the phone memory.

Also see: How To Fix Charging Problems On iPhone Xs/Xs Max/Xr

Solution 4: Reset network settings on your iPhone Xs/Xs Max


A network settings reset will clear out current network configurations including Wi-Fi, cellular data, and Bluetooth connections on your iPhone. This method will be helpful, to resolve network errors that could not be remedied just by simple system reboots. Your current network settings might have been overridden and resulted to a conflict, triggering the cellular update failed error. Simply follow these steps below to reset network settings on your iPhone and restore it to the default configurations:

  1. Launch Settings app from the Home screen.
  2. Tap on General > Reset.
  3. Choose Reset network settings option.
  4. Enter your passcode when you are prompted.
  5. Tap on the popup again to confirm network settings reset.

When the process is completed, your iPhone will reboot itself and then restore the default network options. After that, reconnect to Wi-Fi or re-enable cellular data on your iPhone.

Solution 5: Restore factory default settings using iTunes


If a network reset did not help you, you should then consider restoring your iPhone to the factory default settings. The update could inflict fatal system errors, causing cellular data errors. In this case, you should perform a restore. Before doing so, you should first back up your important files. After that, follow these below steps to restore your iPhone Xs/Xs Max to the factory default settings with iTunes:

  1. Open iTunes software on a computer. Make sure the latest iTunes version is installed to avoid bumping into system conflicts.
  2. Plug your phone into the computer using a certificated Lightning cable.
  3. When you are prompted to Trust This Computer or to enter your device passcode, follow the onscreen instructions to proceed.
  4. Click on your iPhone Xs/Xs Max icon when it shows up in iTunes.
  5. Go to the Summary section on the left panel and then choose Restore button.
  6. When you are prompted, review the information and confirm the restore. iTunes will start the system reset and then download and install the latest iOS version for your iPhone.

Once the reset is completed, set up the cellular data connections again and check if the error has already disappeared.


Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.