“I’m backing up iPhone 8 with iCloud but told that iPhone backup failed for
not enough space in iCloud. I haven’t used iCloud before so why is there not enough iCloud
storage?”

iCloud is a built-in tool on iPhone. You could easily find it in iPhone Settings to backup
iPhone data or the whole iPhone to the cloud. You could sync iPhone data on another Apple
device with iCloud or restore iPhone when you set up it. You should note that iPhone could
only be restored with iCloud when you connect it to Wi-Fi because you could not use cellular
data before set up iPhone.
If iPhone won’t backup up iCloud for not enough storage, this passage would help you release
iCloud storage and backup iPhone with iCloud.
If iPhone backup failed for not
enough space in iCloud
Every user could have 5GB of free iCloud storage. How to solve the problem when iCloud
storage is not enough? You should delete unneeded data on iCloud or reduce iPhone backup
size.
#1 Deleting iCloud photos: iPhone photos could eat much iCloud storage for
their high quality. You could not view iCloud photos on iPhone but there’s another way to
view or delete them.
Step 1. Go to the site of iCloud
and sign the same ID
Step 2. Click the icon of photos
Step 3. Press Ctrl and select pictures as many as you want to delete them.
The best way to clear iCloud storage is backing up iPhone
photos to computer and then delete all the iCloud photos.

#2 Deleting other iCloud data: Even though you could not view the specific
files in the cloud, you could view and delete the whole folder on iPhone.
Step 1. Go to iPhone Settings > [your name] > iCloud > Manage Storage
Step 2. Delete the files you want especially the old backup to release iCloud storage. You
could see all the iCloud data and how much storage they have occupied.
#3 Check iCloud backup size: Except for clear iCloud storage, you could also
reduce the content of iPhone backup.
Step 1. Go to Manage Storage > Backups > tap the name of your device. You could find
the device name there even though you haven’t backup your iPhone with iCloud.
Step 2. Uncheck the apps you don’t want to backup
You could see when you backup iPhone with iCloud last time and the estimated backup size this
time. How much storage that the app data is going to take is shown.

If your backup failed for not
enough iCloud storage but there is
Sometimes iCloud says not enough storage but you remember there is. It might because you are
sharing the 5GB storage with others or Apple is maintaining its service.
#1 Check iCloud storage: The 5GB of free storage is shared with the multiple
devices under the same ID. If you are using the same Apple ID on other device, you should
enter Manage Storage in iCloud setting to check iCloud storage in iCloud settings.
#2 Check iOS System Status: Sometimes Apple is maintaining or upgrading iOS
service, so iCloud might give you wrong clue. You could check iOS System Status to see whether the issue
is being temporarily open. You could wait until the issue is closed or contact Apple support
to consult.
If iCloud says not enough storage,
transfer iPhone data to PC
iCloud just gives you 5GB of free storage but you could have unlimited storage if you choose
to backup iPhone to computer with AOMEI MBackupper. It’s a free
professional iPhone backup software. You could backup photos, videos, music, messages, and
contacts to computer and view them any time you want.
Preview and Select: Unlike iCloud, AOMEI MBackupper allows you to preview and
select the files you want. When restoring, you could also select the data you want.
External Drive: You could change the path by one click to backup iPhone to external
drive. If you have your personal cloud tool like NAS, you could also backup iPhone to NAS as you wish.
Widely Compatible: AOMEI MBackupper supports most iPhone from iPhone 4 to iPhone
11 Pro and the latest iOS 13 would be perfectly supported. Except iPhone, you could also
restore the backup to iPad or iPod Touch with AOMEI MBackupper.
Backup what you care within 3 steps
Step 1. Download AOMEI MBackupper for free. Connect iPhone to computer with USB cable and tap
“Trust” on it.
Step 2. Click Custom Backup. Click an icon to preview and select what you want and click OK
to return.

Step 3. Click Start Backup and your backup would be saved to computer in seconds.

Conclusion
iPhone your iPhone backup failed for not enough space in iCloud, you could clear photos, old
backup, or other data in iCloud setting or the website of iCloud. If you think you there is
enough iCloud storage, you should go to iCloud setting to check whether it is eaten by
another device signed in the same Apple ID or check whether Apple is maintaining iCloud
backup service. The most convenient way to permanently solve your problem is using
AOMEI MBackupper to backup iPhone to computer so that you don’t have to worry about insufficient
storage. If this passage solves your problem, you could share it to help more people.