7 Solutions to iPhone iCloud Storage Backup Failed

iCloud storage is not enough and backup failed? You could solve it by managing iCloud space on iPhone or repair your system on iPhone.


By Dylan / Updated on May 26, 2023

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iPhone iCloud storage backup failed

I want to backup my iPhone using iCloud, but it told me not enough iCloud storage. But it actually has some available space. What should I do?

- Question from Apple Community

iCloud has been a common tool for Apple users. It is quite convenient for you to backup iPhone using iCloud.  Besides, you could use it to sync data like photos, contacts to other iPhone devices. 

However, sometimes, the iCloud backup process gets stuck and you may receive a message saying "iPhone Backup Failed: You do not have enough space to backup this iPhone" or other notifications of backup failure. If you are backing up vital data, it could be very frustrating.

Iphone Backup Failed

Don't worry, you can refer to the following part, we will explain why this problem occurs, and help you out of this problem.

6 solutions to iPhone iCloud storage backup failed

Solution 1: Check iCloud storage and clear iCloud data

When your iPhone prompts your iCloud storage don't have enough space, If your backup failed for iCloud storage, the first step is to check your iCloud storage status.

Go to iPhone Settings > [your name] > iCloud > Manage Storage. You could see all the data having been saved to iCloud. Usually, photos, messages (there might be a lot of photos in iMessages), and old backups would take most of the space in iCloud. You could select the unwanted data to delete.

In Manage storage > Backups, you could see which devices have been backed up to iCloud. If you are sure they are no longer needed, delete them. If you want to check if there is still useful data, you could download iCloud backup to computer.

manage iCloud storage


Solution 2: Check next backup size

Once you enable iCloud backup, it will continually save your data to iCloud as you add data to your iPhone every day. If you got the iCloud storage backup failed notification but you have some available space, it actually the free space is smaller than the next backup size. You can check the next backup size:

Go to iCloud > Manage Storage > Backups > [device name] and you could see the prepared data to be uploaded to iCloud. Then you can uncheck the app means not saving data from that app.

Check Icloud Backup Size

Solution 3: Change iCloud Storage Plan

After checking the iCloud storage, you can remove some data from iCloud to free up space, or buy more iCloud storage plans to get more available space.

When iCloud backup failed for short of storage, the direct solution is to purchase more storage.

Go to iCloud > Manage Storage > Change iCloud Storage Plan and choose a proper plan for you. 50GB iCloud storage costs $0.99 per month, 200GB $2.99 per month, and 2TB $9.99 per month.

iCloud Change Storage Plan

Solution 4: Reset Network/All Settings

iCloud requires the Internet to connect iPhone to the server. If some settings go wrong, the backup might fail and it tells that you have no enough iCloud storage. You need to reset network settings or all settings to refresh the system.

Go to iPhone Settings > General > Reset > Reset Network Settings to solve the problem. Resetting network would erase the passcode of the connected Wi-Fi. You should make sure you still could connect to at least an available Wi-Fi.

If iCloud backup keeps failing, you might need to select Reset All Settings.

Reset Network Setting

Solution 5: Upgrade iOS to repair iCloud issue

If iCloud storage bug happens to too many users, and their iPhone are not backing up to iCloud, Apple would repair the issue and release the latest package. You could check iPhone update by going to iPhone Settings > General > Software Update to upgrade iPhone to the latest iOS.

Ios Preview

Solution 6: Check iCloud status from Apple’s site

If Apple shuts down iCloud service, you might not able to backup iPhone to iCloud. iCloud backup might fail for insufficient iCloud storage. You could go to Apple’s site to check System Status. If iCloud service is temporarily closed, you need to wait for the issue to be solved.

Don’t want to wait? Try an excellent iCloud alternative to save the data you care to computer.

Solution 7: Alternative way to backup and restore iPhone without storage limit

iCloud space is very limited and expanding iCloud storage costs money every month. If you have a large amount of data and don't want to buy more plans, or your iCloud just can't backup your iPhone, You can backup your iPhone to your computer via FoneTool.

It is a free professional iPhone backup software enabling you to create a full backup or selectively photos, videos, music, contacts, and messages to a computer/external drive. Besides, it focuses on the following aspects to protect your data safely.

√ Fast backup and restore: It gives you much fast backup and restore speed than iCloud and other tools.
√ iPhone transfer: FoneTool allows you selectively transfer/backup to PC, which is not supported by iCloud. And it also helps you to transfer data from old iPhone to new iPhone.
√ Incremental Backup: If you add some data on your iPhone, next time you can perform an incremental backup that will only backup the changed or added data, so you can save more time and space.
√ Perfectly work with iOS: It is completely compatible with all iOS versions, PadOS, including iOS 16/15/14/13. You can use it to backup all your iDevices, like iPhone 14/13/12/11, iPad, iPad Pro/Mini/Air.

Step 1. Download FoneTool to computer and connect iPhone to computer with USB cable. Tap “Trust” on iPhone.

Download Freeware Win 11/10/8.1/8/7
Secure Download

Step 2. Click Phone Backup and go to Selective Backup.

Custom Backup

Note: If you want to completely backup your iPhone, please choose the "Full Backup" button. It will completely backup your iPhone to computer.

Step 2. Check the file you want to backup. You can click the icon to choose the specific items. Then click OK.

Select Files

Step 3. Select a storage path > Click Start Backup to save a copy of your iPhone to computer.

Click Start Backup


This is how to fix the "iPhone iCloud storage backup failed" issue. You can free up your iCloud storage, buy more space, reset the network, update iOS, and so on. If you still got the failing notification, you can try FoneTool to backup your iPhone to a computer.