7 Solutions to Fix "The Last Backup Could Not Be Completed" Issue

2024-03-25 22:13:30/Posted by Alleny Gavinto iOS Transfer Topic/Follow @ MobiKin

Encountering the message "the last backup could not be completed" can be a frustrating experience for iPhone users, as it indicates potential issues with safeguarding their data. This notification often arises during attempts to back up important information, leaving users uncertain about the integrity of their backup files. Understanding the underlying causes behind this error message is crucial for effectively resolving the issue and ensuring the security of valuable data.

In this discussion, we'll delve into the common reasons why backups fail to complete, along with practical solutions to address these challenges. By gaining insights into this iCloud backup failed problem, users can better navigate their iPhone backup processes with confidence and reliability.

the last backup could not be completed

Part 1. Why the Last Backup Could Not Be Completed?

The reasons why "the last backup could not be completed on iCloud" can vary, ranging from unstable Internet connections to errors with Apple servers or insufficient iCloud storage. Below, we'll explore some of the main factors contributing to this issue:

  • iCloud Syncing Disabled: If your iPhone's last backup failed, it might be because iCloud syncing is turned off. Enabling iCloud backup is necessary to address this issue effectively.
  • Poor Network Connection: Another common cause of failed backups is an unstable Internet connection. When your network is unreliable, your device may struggle to connect to iCloud, resulting in backup failures.
  • Insufficient iCloud Storage: Adequate iCloud storage is essential for successful backups. If your iCloud storage is full, your device may notify you that the last backup could not be completed.
  • Outdated iOS Version: An outdated iOS version can also impede iCloud backups. Updating your device to the latest iOS version is necessary to ensure seamless iCloud syncing.
  • Apple Server Error: Occasionally, errors with Apple servers can disrupt iCloud backup processes. If none of the aforementioned reasons apply, consider the possibility of a system malfunction on Apple's end.

Now that we've outlined the primary factors contributing to this issue, let's explore potential solutions in the following section.

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Part 2. How to Fix "The Last iCloud Backup Could Not Be Completed"

What to do when iCloud backup could not be completed? Here 7 practicable solutions are ready to fix this problem.

1: Turn on iCloud Backup

If you encounter the "backup could not be completed on iCloud" error on your iPhone, it's possible that iCloud Backup has been disabled, preventing the backup process.

To enable iCloud backup:

  • Open the Settings app on your iPhone.
  • Tap on your Apple ID name, then select iCloud.
  • Scroll down and tap on iCloud Backup. Toggle the switch to turn on iCloud Backup.
  • If iCloud Backup is already enabled, toggle it off and then on again to refresh the settings.

enable the icloud backup

After completing these steps, attempt to perform an iCloud backup again to check if the issue is resolved.

2: Connect to a Stable Network

Given that an unstable network connection can lead to iCloud backup failures, it's essential to verify your Internet status. If your Wi-Fi signal is weak or unreliable, consider troubleshooting the network or connecting to a different Wi-Fi network.

Here are the steps to follow when your iPhone won't back up:

1. Reconnect to Wi-Fi:

  • Open Settings and select Wi-Fi.
  • Toggle off the current Wi-Fi connection and then toggle it back on. Alternatively, you can select "Forget This Network" and re-enter the password to reconnect. Allow some time for the connection to stabilize.

2. Connect to Another Wi-Fi:

  • Navigate to Wi-Fi in Settings.
  • Connect to an alternative available Wi-Fi network.

3. Reset Network Settings:

  • If the above methods fail, attempt to reset your network settings.
  • Open Settings and go to General.
  • Tap on Transfer or Reset iPhone, then select Reset > Reset Network Settings.
  • Enter your screen lock password when prompted and wait for the process to complete.

reset network settings

Once you've addressed any network issues, try initiating the iCloud backup process again to check if the problem persists.

3: Check Your iCloud Storage

Before proceeding with this method, ensure that your previous backups have been archived on your computer via iTunes.

Here's how to do it:

  • Open the "Settings" app on your iPhone.
  • Tap on your Apple ID name, then select "iCloud".
  • Navigate to "Manage Storage" > "Backups".
  • Remove old backups to free up iCloud space for new backups.
  • Once you've deleted the old backups and ensured adequate iCloud space, attempt to back up again and observe the outcome.

check icloud storage

4: Sign out and Sign in Again

If there's an issue with your iCloud account, it may hinder your iPhone from completing backups successfully. If iCloud syncing isn't functioning properly, backups may fail. To resolve this, consider signing out of your iCloud account temporarily and then signing back in.

Here's how:

  • Open the Settings app on your iPhone.
  • Tap on your Apple ID name, then scroll to the bottom and select "Sign out."
  • Wait for a few minutes, then sign back in by tapping "Sign In."

sign out icloud and sign back in

After completing these steps, you should be able to perform backups in iCloud without any issues.

5: Update Your iOS Version

The "iCloud could not complete backup" error may occur if iCloud detects a backup from a newer iOS version. This issue can lead to failed iCloud backups on iPhones or iPads, often stemming from bugs within the iOS version. Despite occasional challenges, Apple promptly addresses such issues.

To address this problem, navigate to the iPhone "Settings" app, then go to "General" > "Software Updates". Download and install the latest available iOS build on your device.

update ios

6: Check the Apple System Status

In certain instances, inability to back up using iCloud may not stem from issues with your iPhone, but rather from problems within the Apple system. It's essential to check the status of Apple's systems and ensure that the iCloud service is operational.

To do so, simply visit the Apple System Status page in your web browser and locate the iCloud Backup service. If the service is listed as available, the issue may lie on your end. However, if the service is marked as unavailable, there's nothing to be done except wait for the service to recover.

check apple system status

7: Restart Your Device

If none of the aforementioned solutions resolve the issue, consider restarting your iPhone or iPad. After restarting the device, check again to see if the "backup could not be completed on iPhone" error persists.

Typically, this step allows the iCloud backup to complete successfully. If the issue persists, you may want to consider using an alternative backup tool. In the following section, we'll introduce a convenient and secure option for your consideration.

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Part 3. Use An Easier iCloud Alternative to Back Up iPhone

If the "The last backup could not be completed" error persists despite attempting the previously mentioned steps, don't panic. There are alternative methods available for backing up your iPhone. While iCloud Backup offers convenience, allowing you to schedule automatic backups, it may require purchasing additional iCloud storage over time and can be prone to errors.

Consider using MobiKin Assistant for iOS, a comprehensive iOS device management software. This tool not only enables backup and restoration of your iPhone data but also facilitates easy management of iOS data on your computer with just a few clicks.

Assistant for iOS - Flexible Way to Back Up iPhone

  • Easily back up your iPhone data selectively or entirely to your computer with just one click.
  • Backup support for various data types including Video, Photo, Music, eBook, Contacts, Text Messages, Calendar, Safari Bookmarks, and more.
  • Preview and restore any item from the backup to any iOS device at your convenience.
  • Experience seamless backup and restore processes without encountering any data loss issues.
  • Compatible with nearly all iOS devices, including the latest iPhone 15 series, and the newest iOS 17 version.

assistant for ios win assistant for ios mac

Simply follow the steps here to back up your iPhone using Assistant for iOS when the iCloud backup not working.

Step 1. Launch the installed Assistant for iOS on your computer and use a USB cable to connect your iPhone to the PC. Go with the on-screen prompts to make the connected iPhone recognized. Once done, you can will see the following interface:

launch assistant for ios

Step 2. Click on "Super Toolkit" > "iTunes Backup & Restore".

choose itunes backup and restore

Step 3. Then a window will pop up. Just choose "Backup" from the window.

choose backup option

Step 4. Select the connected iPhone to backup and choose a location to save your iPhone backup files. At last, you can tap on "OK" to start backing up your iPhone data.

backup iphone to computer with one click

If you only want to back up specific files, Assistant for iOS also allows you to preview and selectively back up your iPhone data. Simply select the file categories you wish to back up from the left sidebar, and Assistant for iOS will scan your device accordingly. You can then preview the files, select the ones you desire, and finally click the "Export" button in the top menu to back them up to your specified location.

backup iphone selectively


Video guide:

Final Words

In conclusion, facing the "the last backup could not be completed" issue during backup attempts can indeed be exasperating. While we've discussed various steps to address this problem, there's a notable recommendation to simplify matters: MobiKin Assistant for iOS. With this tool, you can seamlessly back up your iPhone data selectively or completely to your computer with a single click. It also facilitates preview and selective backup functionalities. Utilize Assistant for iOS to tackle backup hurdles and efficiently protect your valuable data.

assistant for ios win assistant for ios mac

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Alleny Gavin
Alleny GavinChief Editor
A chief editor at MobiKin, brings over a decade of experience in technical writing and holds a B.A. in English Literature. With a background as a Project Manager in the IT industry, he has authored 1000+ articles on, offering expert solutions for iOS issues. Gavin, a tech enthusiast, effortlessly recommends software with passion and extensive expertise in smartphones and software.
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