"Help! Why does my iPhone notify ‘The Last Backup Could Not Be Completed’? Any solution?"

iCloud can back up your iPhone or iPad to keep your data in case of system or hardware failures. However, you might encounter the problem that "iCloud backup could not be completed" when you wait a long time for iCloud backup to be finished. Don't worry. You can check the possible causes and learn how to fix the iCloud backups could not be completed issue so that you can back up data using iCloud with ease.

Part 1: Why Can’t iCloud Backup Be Completed

A variety of reasons may lead to the backup not being completed in iCloud, such as a poor network connection. Some important reasons deserve your attention.

Poor iCloud Storage

When the iCloud storage nearly runs out after this backup, it may prompt that the iCloud backup cannot be completed.

Unmatched Credentials

If your iCloud credentials are incorrect, for example, you may have changed the password in a browser, not on your iPhone, and the backup may not be completed on your iCloud.

No Stable Wi-Fi Connection

iCloud backups require a strong and consistent internet connection. If your network disconnects during the process, the backup will pause or stop directly.

Outdated iCloud Version

If your iCloud or iOS version is outdated, it may cause compatibility issues that prevent backups from being completed properly.

System Issues

Sometimes, system failures can interfere with the iCloud backup process. When this happens, your device may not be able to complete the icloud backup.

Part 2: 8 Possible Ways to Fix iCloud Backup Not Working

Now, you should be ready to fix the iCloud backup that is not completed. There's no corresponding method, so you can try the methods below.

1. Free Up iCloud Storage

It's very helpful if you can check the iCloud storage. At the very least, the free storage space is not sufficient.

Step 1. Step 1 Go to the iCloud website and sign into your iCloud account.

Step 2. Step 2 Once logged into your iCloud, you can remove unnecessary data and files in the file groups displayed on the website. After you free up enough storage, you can fix the backup not completed on iCloud, and please back up your iPhone again.

2. Connect to a Stable Wi-Fi

When you want to back up your iPhone with cellular data, you may see that the iCloud backup is not completed, especially when your iPhone has too much data. You only need to change to a stable Wi-Fi network connection to fix that.

Step 1. Open Settings and tap the WLAN button to connect to a stable Wi-Fi network.

Step 2. Moreover, you can tap the Information button of the connection and then tap the Toggle button to turn off the Low Data Mode, which may slow the iCloud backup speed. In this way, you may fix the last backup not completed on iCloud.

3. Restart the iPhone

Restarting an iPhone should be a very quick way to fix many system errors. When your iCloud backup is not completed, you might restart the device to fix this problem. If your device isn't responding at all, you can try to force restart the iPhone, which won't damage the hardware.

4. Re-sign into Your iCloud

If you encounter an unmatched iCloud password, you should log out of the iCloud account and sign in again. It will also help you re-establish the connection with the Apple Server.

Go to settings and tap your profile. Then, slide down to the bottom and tap the Sign Out button. You can sign in to your Apple ID again and then check if you can solve the iCloud backup not completed.

5. Update Your iCloud

As we mentioned above, if your iCloud or iOS version is outdated, it may cause errors during the backup process. Apple frequently releases updates to fix various bugs to improve the user experience. Therefore, it is of great significance to keep your iCloud up to date.

To update your device or iCloud, you can go to Settings - General - Software Update.

6. Reset All Settings

If you’ve tried all methods above and your iCloud backup still fails to be completed, you can try to reset your iPhone to resolve hidden configuration errors. This method will not erase any important data, but some system settings.

To erase all settings, you can head to Settings - General - Transfer or Reset iPhone - Reset - Reset All Settings.

After the reset, try to reconnect to Wi-Fi and sign back into your iCloud account to check whether the iCloud backup is back to normal.

7. Check Apple System Status

Sometimes, if iCloud backup doesn't work, it's not due to your device, but rather because the corresponding server from Apple is shut down or under maintenance. You can go to https://www.apple.com/support/systemstatus/ to check whether the iCloud Backup server is available.

8. Ask for the Official Support

If all the methods above can’t help with iCloud backup not working, all you can do is ask Apple Support for help. You can go to iCloud Support Communities (https://discussions.apple.com/community/icloud) and express your problems in detail.

Part 3: Ultimate Solution to iCloud Backup Could Not Be Completed

If all the methods above can't fix the last backup that could not be completed on iCloud, why not switch to a better backup program? Apeaksoft iOS Data Backup & Restore can help you back up your iPhone through on your PC/Mac. What's different is that you won't be bothered by the network problems. Moreover, you can also quickly restore your iPhone from the previous backup files on your computer.

Step 1. Download Apeaksoft iOS Data Backup & Restore and launch it. Plug your iPhone into your computer with a USB cable. Then, click the iOS Data Backup button to start iCloud backup on your PC.

Step 2. You can choose to back up your iPhone directly. If you want to back up with credentials, you can choose Encrypted backup and click the Start button.

Step 3. Now, you can determine what types of data you want to back up, such as photos, music, contacts, etc. Then, click the Next button.

Step 4. The program starts backing up your device. With this powerful program, you won't encounter iCloud backup not being completed anymore.

Part 4: FAQs of iCloud Backup Could Not Be Completed

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