iCloud is a syncing system and not an offline backup (like Dropbox or OneDricpve). It's purpose is to give you access to your files on every device signed in with the same Apple ID. You need to use something different if you want to move files. Answer from ObviousExchange1 on reddit.com
Reddit
reddit.com › r/iphone › iphone storage full, but plenty of space in icloud - how to offload photos onto icloud, or another way to open up storage?
r/iphone on Reddit: iPhone storage full, but plenty of space in iCloud - how to offload photos onto iCloud, or another way to open up storage?
September 2, 2023 -
Phone storage is maxed out
Photos take up a huge chunk of that
I have 150 GB free in iCloud storage
I have iCloud Photos turned on
I have Optimize iPhone storage toggled on
How can I “move” the photos onto the cloud and take them off my phone to open up space?
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iCloud is a syncing system and not an offline backup (like Dropbox or OneDricpve). It's purpose is to give you access to your files on every device signed in with the same Apple ID. You need to use something different if you want to move files.
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I ended up getting an external SSD, backed all my photos to that and deleted them from my iCloud. Was pretty surprised it took me so long to realize that iCloud isn’t a true off-device cloud backup.
Apple Community
discussions.apple.com › thread › 254519803
How to free up storage space on iPhone? - iCloud
Clear your browsing history and data: Go to Settings > Safari and tap "Clear History and Website Data". Enable iCloud Photo Library: Go to Settings > Photos and turn on iCloud Photo Library. This will allow you to store your photos and videos in iCloud and free up space on your iPhone.
Videos
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iPhone Tips: Strategies to Free Up More iCloud Storage - YouTube
Apple Support
support.apple.com › en-us › 108922
Manage your iCloud storage on your Apple device - Apple Support
You can free up storage in iCloud by deleting content that you're not using — such as duplicate photos, files, and texts and attachments in Messages. Before you delete anything, you might want to archive or make copies of the information that you store in iCloud.
PanFone
panfone.com › data-erase › how-to-free-up-icloud-storage-space-on-iphone.html
Top 3 Ways to Free Up iCloud Storage Space on iPhone
Now erase all photos from iCloud to create even more iCloud storage space. If you don’t want the new photos to be uploaded to iCloud, you can disable your iCloud Photo Library. That’s all there is to it. Following these solutions should free up your iCloud storage as much as possible.
Apple
support.apple.com › en-ca › 105061
Manage your photo and video storage - Apple Support (CA)
When Optimize Storage is turned ... have enough space in iCloud, you can store as many photos and videos as you want. When you sign up for iCloud, you automatically get 5GB of free storage....
InsanelyMac
insanelymac.com › forums › apple world › new apple users lounge
How do I free up space on my iPhone? My Storage is full - New Apple Users Lounge | InsanelyMac
October 22, 2025 - Can anyone offer some advice for my situation? I recently went on a mountain trip and started recording a personal video blog using my iPhone. Mid-recording, I got a warning saying the storage was almost full, and the video recording stopped. I quickly deleted a few files just to be able to take ...
Asurion
asurion.com › connect › tech-tips › free-up-icloud-storage
How to free up iCloud storage without losing your data
1 month ago - Go to Settings > [your name] > iCloud > Manage Account Storage > Backups. Tap the name of the old device. Tap Delete Backup and confirm. This won’t affect your phone, so it’s a safe way to free up space.
Reddit
reddit.com › r/applehelp › any advice on clearing icloud storage?? i’ve deleted so many things and it has not helped 😭
r/applehelp on Reddit: Any advice on clearing iCloud storage?? I’ve deleted so many things and it has not helped 😭
December 11, 2024 -
I have spent the morning organizing files, photos, books, notes etc. I've deleted most of what I don't need and it STILL didn't free up any space 😭 I need a solution other than deleting.
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5gb is the free amount they give you. It’s a suitable amount of space for simple things like synching contacts and such, but it’s completely inadequate for doing any kind of real backup, unless you have practically no data. If you want to use iCloud as a full backup solution, you generally need to pay for upgraded storage. I’ll add on that files and notes take up practically no space. One short video can take up more space than 100 notes and documents. If you’re really looking to clear space, you gotta delete large data items like photos and videos.
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Go into settings and tap your name, then tap on icloud > saved to icloud. Scroll down and toggle off anything you don't want backed up. Apps have data that may be included in your backups, making them bigger than the 3.6 gig space you have available in icloud. Alternatively, you can buy more icloud storage. It's nice if you have family members to share it with. I have 4 people sharing 200gigs for $2.99 a month. The convenience is worth it for me.
IONOS
ionos.ca › digital guide › online marketing › social media › how to free up space on iphone
How to free up space on your iPhone - IONOS CA
September 8, 2023 - Select an app from the list under iPhone Storage. Choose whether to delete the app or offload it. Offloaded apps will be displayed on your home screen with a cloud symbol. Outsourcing large files isn’t the only way to free up storage space. You can also optimize photo storage under Settings > Apple ID profile picture > iCloud > Photos.
Gbyte
gbyte.com › home › blog › device tips › icloud tips
Free Up iCloud Storage: Delete These 7 Things Taking Up Space
September 29, 2025 - Tap FaceTime, then choose Delete Data from iCloud. If you want to keep FaceTime videos, export them to your Photos app before deleting. Also, check Recently Deleted to permanently remove them, otherwise storage won’t be fully freed.