How to Fix Cellular Update Failed iPhone Issue

Simply put, Cellular Update Failed means that you cannot use your cellular service for anything. In other words, Cellular Update Failed means that you are not going to receive or send any text, make a phone call, or even use its data. 

To fix the Cellular update failed iPhone problem, firstly you must update the system software of your device. Next step is to turn off Voice LTE and WiFi Calling for some time. Now eject the SIM card and reinsert again. If this does not help, we have listed 9 methods to solve the Cellular update failed problem. 

The Cellular Update Failed error may not be very convenient for you. However, there are multiple ways for you to fix it. I would suggest that you get the Cellular Update Failed error fixed as opposed to getting a new set altogether. Let us now run through a few methods to fix the Cellular Update Failed error.

1. Updating the iOS

Software updates is one of the key methods used by Apple to enhance the experience of its user. And these updates are usually for free. At the same time, there are certain updates released by Apple that help in fixing bugs and tweaks.

These are usually responsible for the Cellular Update Failed error. These are the steps to follow for updating the iOS and fixing the Cellular Update Failed error subsequently.

  • Open Settings and go to the General section.
  • Navigate to the Software Update option and click on it.
  • When you see the option to update, click on Download and Install and wait for some time.

After the update is over check if the Cellular Update Failed error still occurs.

2. Turning off Voice LTE and Wi-Fi Calling

Another probable cause of the Cellular Update Failed error can be changes in settings due to WiFi calling or Voice LTE. Turning these off for a few minutes may fix the Cellular Update Failed problem. This is how it is done.

  • Open Settings, then choose Cellular, followed by Wi-Fi Calling.
  • Turn off Wi-Fi Calling by clicking the Toggle switch.
  • Go to Cellular Data Options and then click on Enable LTE.
  • Click on “Data Only” so that you disable the Voice LTE.

Usually, this method is not a guarantee to solve the error but is a temporary fix. It may help you when you have to make an urgent call or text or use the mobile data for some other purpose.

3. Turning on the Airplane mode and then off

Turning on the Airplane mode can either mean that you are in an airplane or that you are busy and don’t want anything to distract you. At the same time, it can also help fix the Cellular Update Failed error. This too is a temporary solution like the previous one and is yet worth trying out.

  • Open Settings, and look for the Airplane Mode option.
  • You will find it under the Account Settings.
  • Just touch the toggle key to turn it on and then turn it off again.

Now check if you are still facing the Cellular Update Failed error by texting or calling someone.

4. Turning on the Cellular Data and then off

This is a rather simple solution to the Cellular Update Failed error.

  • Open settings and choose the Mobile data option to access its settings.
  • Click on the toggle key against the Mobile Data option to turn it off and then click on it again to switch it on.

The cellular data of your iPhone will be reset by doing so. Now check if the Cellular Update Failed error persists or not by calling or texting someone or using the mobile data for some other purpose.

5. Checking the Carrier for any Update

Sometimes the Cellular Update Failed error is not because of something wrong with the iPhone. It can also be due to your carrier with updates. Consequently, it is your job to check if there are updates for your carrier as well as iOS settings. Check how to manually update carrier settings

These updates are necessary for cellular connection enhancement as well as fixing the Cellular Update Failed error. To see if you have updates, go to Settings > About.

If there is an update, you will be able to spot it in the form of a notification that reads “Carrier Settings Update”. Just click on that popup and you are good to go. In case you don’t spot any popup, it means your iPhone is already updated.

6. Inserting the SIM Card again

Many a time, the Cellular Update Failed will also feature alongside a notification that reads No SIM. If that happens, all you have to do is eject the SIM card and then insert it again to check if the Cellular Update Failed persists.

Ejecting the SIM card from the SIM tray will require an ejector pin. You can also use a paper clip for the same purpose in case you don’t have a SIM ejector.

7. Resetting the Network Settings

Since you are reading about this method, it is safe to assume that the ones prior to this haven’t worked yet. You can always reset the network settings in order to fix the Cellular Update Failed problem. Network settings include your WiFi, Bluetooth, VPN and so on. The steps are as follows.

  • Open Settings and choose the General option.
  • Open the Reset option and select the Reset Network Settings options. This will erase all data related to your network.
  • Tap Reset one more time for verification purpose. Now check if you are still having to deal with the Cellular Update Failed error.

Make sure you save the passwords of all your networks before you reset them. You will have to enter the passwords again to connect with those networks.

8. Setting the iPhone to DFU Mode

Usually, when all other methods have failed, this method is like your last resort. It is an extreme step, as it entails the factory resetting of your iPhone. People reset their phones usually when they want to sell it off to someone.

It is advisable that you try out all the above methods of fixing the Cellular Update Failed before this one. Before putting the iPhone to a DFU mode, save your data in a backup account.

Make sure that you have saved all your app data, files, contacts and other crucial items to iCloud. Once you have done so, it is time to proceed with the resetting. Before that, you need to plug your iPhone to your Mac to open iTunes or Finder.

The steps to reset an iPhone 7 or older are as follows:

  • Press the sleep button as well as home button for around eight seconds.
  • Release the sleep button but not the home button. Let the iTunes/ Finder detect your iPhone.
  • Now release the home button so that your iPhone goes dark.
  • Use Finder or iTunes to restore your iPhone.

The steps to reset an iPhone 8 or newer are as follows:

  • Press the volume up button followed by the volume down button. Now press the side button long enough for the screen to go black.
  • Press the volume down button for long immediately along with the side button.
  • Wait for five seconds and then release the side button but not the volume down button.
  • Release the volume button once the iPhone appears in Finder or iTunes. The process is over and the Cellular Update Failed error has been fixed.

9. Contact Apple

Finally, if resetting doesn’t work as well, then the only thing left to do is to reach out to Apple support. Narrate the problem to them properly so that the technicians can take the appropriate steps to fix the Cellular Update Failed error. You can also reach out to the customer hotline in case Apple support is not able to fix the problem.

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