7 Top Ways to Fix iCloud Backup Failed But I Have Space

This article totally introduces 7 ways to solve “iCloud backup failed but I have space” issue, which contain checking Internet, switching off and on iCloud Backup, using FoneTool, etc.


By Kathy / Updated on May 31, 2024

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My iCloud backup failed even with enough space

My iPhone 15 backup keeps failing, I have enough iCloud storage space, but it still prompts me that the backup failed due to insufficient space, why? Can you give me any advice, please?

- Question from Apple Community

Backup Fail

What to do when iCloud not backing up even with enough storage


iCloud is a cloud server commonly used by Apple users, which is used to store private data. Sometimes we may encounter some iCloud issues when backup data. The most common problem we encounter is iCloud storage full, and we can solve it by freeing up space. 

But sometimes why iPhone won't backup even though iCloud has enough storage? The next content will be the causes and reasons for iCloud backup failures with enough space and introduce another two great backup utilities for iPhone: iTunes and FoneTool.

Part 1. 5 methods to fix iCloud not backing up with enough storage

In the following part, there are 5  methods below to help you figure out about iCloud not backing up with enough storage.

Method 1. Charge your phone with enough power

iCloud backup is relatively power-hungry, so backup requires enough power on the phone( more than 50%). There is a battery icon in the upper-right corner of your iPhone where you can check the battery level. If the phone battery is low, please charge it in time.

Battery Drain

Method 2. Check your Internet

iCloud backup can only be performed under the condition of a stable network, so you ought to check your Internet. If you use cellular data, I suggest you switch to WIFI because it’s more stable than the former.

You can quickly open the Control Center (swipe down from the upper-right corner or swipe up from the bottom of the screen), and convert the network connection.

iPhone Control Panel

If your network condition is good but your iPhone still fails to back up, you could go to iPhone Settings > General > Reset > Choose Reset Network Settings to fix.

reset Network Settings

After resetting the network, you shouldconnect to WIFIagain.

Method 3. Turn off and on iCloud Backup

iCloud settings can also cause backup problems. You can fix the problem by restarting your iCloud Backup.

Step 1. Open the iPhone Settings, and then tap your name.

Step 2. Click iCloud and tap iCloud Backup.

Step 3. Switch off and on iCloud Backup.

Step 4. Tap on Back Up Now.

iCloud Back Up

Method 4. Re-login to your iCloud account

Another simple way to fix iCloud is to log back into iCloud. This is a quick fix if the iCloud is faulty.

Go to Settings > Tap your name > Slide down and click Sign Out > Enter your Apple ID to sign in.

Sign Out iCloud

Method 5. Contact Apple Support

If you use the above methods and your iCloud backup still fails, you can contact Apple Support via the official website. They know their products better, so they can bring you a more effective solution.

Apple Support

Part 2. Backup iPhone with iTunes

You can utilize iTunes on your PC to back up your data as well. Compared with iCloud, iTunes is more complete on backup because iCloud has limited storage space.

Step 1. Download iTunes on the computer, and connect your iPhone to the computer.

Step 2. Click the device icon in the upper-left corner.

Step 3. Tap Summary, and click Back Up Now.

iTunes Backup

Part 3. Using FoneTool to backup your iPhone

You can use a third-party iPhone data tool, FoneTool. As a professional backup tool, it has many merits.

No Internet required: It does not require an internet connection, just connect the iPhone to the computer via USB cable to use.
Easy to use: It provides users with a graphical interface to complete the backup with just a few mouse clicks.
Two backup modes: It can not only make full backups, but also selective backup.
Flexible restorations: It can restore data to different devices, like iPhone, iPad, iPod touch even if you are using different Apple IDs.
Keep your data safe: You can encrypt your backup, which can be very useful for backup privacy information like Health Data on iPhone.

Click the button below to download this freeware.

Download FreewareWin 11/10/8/7
Secure Download

One-click backup of your data

Step 1. Launch the FoneTool, and connect your iPhone to computer via a USB cable.

Step 2. Click Phone Backup and go to Full Backup. Then, click Get Started.

Full Backup1

Step 3.  To manage the backup path, click the settings icon. Then, click Start Backup to back up your iPhone 15 or other iPhone models.  

Full Backup2

Selective backup iPhone data

Step 1. Run FoneTool, and then connect your iPhone to computer.

Step 2.  Click Phone Backup and click Get Started under Selective Backup.  

Selective Backup 1

Step 3. You can choose the data that you want to back up and preview and click Start Backup.

Selective Backup 3

With FoneTool's powerful features, you can also easily upload, download and delete iCloud data. (My iCloud > Log in with your iCloud account > Manage iCloud)

Or transfer iCloud data from one account to another. (My iCloud > Log in with your iCloud account > iCloud Sync)

sync or manage iCloud

Sum up

That’s the solution to the “iCloud backup failed but I have space” issue. You can choose to repair your iCloud, or just use iTunes and FoneTool directly.

In fact, FoneTool is also a practical transfer software, which supports transfer between different devices, like computer to iPhone, iPhone to iPhone, iPhone to iPad, etc.

Kathy · Editor
Kathy is an editor of FoneTool, who prefers to help more users address a series of iOS-related problems. She likes traveling and being close to nature makes her relax. She is also keen to engage in social activities and spend much free time with her friends.