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Apple Community
discussions.apple.com › thread › 251534752
iPhone storage keeps going back to full a… - Apple Community
Have had this problem recently, deleted all apps, photos etc and still in an hour's time my storage would go from 40GB free to full! It feels like I tried it all, eventually I restored the phone after backup, and now the problem is solved. It's a pain but it worked well. Reply · Link · User profile for user: Lawrence Finch · Lawrence Finch Community+ 2025 · User level: Level 10 · 228,200 points · Jan 10, 2021 7:18 AM in response to SethCN · See this Apple support link→Clear Other storage on your iPhone or iPad - Apple Support ·
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BGR
bgr.com › tech › iphone-storage-almost-full-bug-plaguing-users-who-update-to-ios-15
'iPhone Storage Almost Full' Bug Plaguing Users Who Update To iOS 15 - BGR
December 27, 2022 - — SI (@ftbrowsr) September 22, 2021 · The good news is that the notification is not actually affecting the amount of storage available. Apple hasn't said what is causing the bug, but it shouldn't affect the actual storage available on your device. The bad news is that users can't remove the "iPhone Storage Almost Full" warning from the Settings app.
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India Today
indiatoday.in › news › technology › news › some users who updated to ios 15 now receiving "iphone storage almost full" message
iPhone full after update? Some users who updated to iOS 15 now receiving "iPhone storage almost full" message
September 23, 2021 - The full storage bug in iOS 15 pops up the "iPhone storage almost full" message on top, regardless of how much storage a user has on the device. A user who posted the same message on Twitter claimed that he had almost 50GB of free storage on ...
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iDownloadBlog
idownloadblog.com › home › ‘iphone storage almost full’ bug impacting some early ios 15 adopters
'iPhone storage almost full' bug impacting some early iOS 15 adopters
September 21, 2021 - As noted today by AppleInsider, ... report says that the iPhone owners who have tried to fix it by deleting data from their device has not resulted in a fix....
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AppleInsider
appleinsider.com › articles › 21 › 09 › 21 › iphone-storage-almost-full-message-plaguing-some-ios-15-users
'iPhone storage almost full' message plaguing some iOS 15 users | AppleInsider
September 21, 2021 - Anyone else run into an iOS 15 bug that says "iPhone storage almost full" in Settings when there's plenty of space available? My device has 20GB free and I can't dismiss it. pic.twitter.com/fSQlkBuzA5— Matt Brian (@m4tt) September 20, 2021 · #iOS15 once updated says iPhone storage is almost full.
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Minicreo
minicreo.com › iphone storage full bug › fix my iphone › how to fix iphone storage full bug error
[iPhone Storage Full Bug] How To Fix iPhone Storage Full Bug Issue | MiniCreo
To fix this iPhone Storage Full Bug, you can simply update your iPhone device to the latest version, which has addressed this bug with the recent iOS update release. If you still have iPhone Storage Almost Full headache, you can give a check on your iPhone Settings > General > iPhone Storage.
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Apple Community
discussions.apple.com › thread › 255354961
iPhone storage bug - wrong space - Apple Community
Storage Space of iPhone 6S This is a 32GB iPhone 6S. I hardly have any files there - no photo/video. Minimal Aps. But the storage shows 100% full - 31.8GB out of 32GB. On analyzing the Storage - 25GB is held by "Other" which is supposed to be System Logs , Cache etc.
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ZDNET
zdnet.com › home › tech › smartphones › iphone
'iPhone storage almost full' after installing iOS 15? Here's what NOT to do | ZDNET
September 22, 2021 - @AppleSupport I had the ‘iPhone storage almost fullI’ message through all iOS 15 betas. I reported it via feedback app but was never fixed. Just upgraded to final version & it’s still there. Tapping it does nothing. My phone storage is NOT full pic.twitter.com/VZkrRGAbLI— James Moore + (@mrjamesmoore) September 20, 2021
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AppleVis
applevis.com › forum › ios-ipados › storage-full-even-though-you-have-plenty-storage-space-left
Storage full even though you have plenty of storage space left | AppleVis
My wife has been seeing this same notice on her iPhone 11 Pro Max ever since she upgraded to iOS 15. She's now running iOS 15.2 and it's still happening. Her iPhone storage used is 43GB out of 64GB. That shouldn't trigger this notice. I agree. This should not be coming up like this · Is a bug.
Find elsewhere
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iToolab
itoolab.com › itunes › iphone-storage-full-bug
5 Tips to Fix iPhone Storage Full Bug When Update iOS 16
If 4 solutions above did not work on fixing iPhone prompt not storage almost full but it’s not, we suggest you restore your device by iTunes. Before you restore iPhone, please sync your data by iTunes completely. As we know, on Mac/Win system, iTunes backup files are stored in the C drive. Overload junk files affect the running speed of computer. In severe cases, it will not even download the new iOS 16 update files and backup user data from iPhone/iPad.
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iMore
imore.com › ios › ios 15
'Storage almost full' bug affecting iOS 15 users | iMore
September 23, 2021 - It seems that it is a bug and many other people have it, so we have to wait for a fix by @Apple pic.twitter.com/DzJ4ogdx99— John Champ (@pixelcave_john) September 23, 2021September 23, 2021 · Unfortunately, there's no sign of a fix or workaround, ...
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Beebom
beebom.com › users-report-iphone-storage-almost-full-warning-bug-ios-15
Users Report 'iPhone Storage Almost Full' Warning Bug After Installing iOS 15 | Beebom
September 24, 2021 - Home > News > Users Report ‘iPhone Storage Almost Full’ Warning Bug After Installing iOS 15 · Subin B · Published: September 24, 2021 Comments 9 · Share · Copied · Soon after Apple released iOS 15 earlier this week, users started noticing an ‘iPhone Storage Almost Full’ warning in the Settings app.
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Reddit
reddit.com › r/ios › ios takes up almost a third of my storage
r/ios on Reddit: iOS takes up almost a third of my storage
September 28, 2025 -

My system data takes up 36.59 GBs.

I know that’s not excessive for an operating system in general, and yes, I know 128 gigs isn’t very much these days, but it still seems crazy to me that the system data is almost 1/3 of a devices storage.

I know they appear to be slowly moving iOS, iPad, OS, and macOS towards some unified multi device operating system (which would be amazing), so there is probably some foundations for that bloating the system that aren’t getting used right now…

But even with that, it just feels kind of nuts for a phone’s operating system to take up such a huge portion of the phones memory.

———

P.s., no Settings doesn’t actually show you how many gigabytes your system data is taking up. I gave a screenshot to ChatGPT that was cropped to the width of the line chart, and I had it right Python code that would use the number of pixels in the system data section divided by the total width of the chart to approximate the gigabytes taken up by system data. Prompt in the comments.

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37Gb of System Data on an iPhone is not normal; it’s a sign something’s gone wrong. “System Data” is a part of the operating system’s way of managing icons, photos, caches, etc. It goes up… and it goes down… and you can’t get rid of it (under normal circs.) Anything up to the size of the operating system itself? That’s fine. It’s how iOS (and iPadOS, come to that) operates. Again under normal circumstances. Very occasionally, due to one or more different things (a bad update, an app not behaving as it should, an app not releasing the cache when it’s finished, a few other reasons) the operating system doesn’t/won’t release the data in there… and the “System Data” grows… and grows… and grows… Again, this only happens very rarely, but when it does, and the system data gets to 30Gb, 40Gb, I’ve even personally seen 60Gb+, the only guaranteed way to clear it is to do a full backup/restore. Again, though, in normal operation, you should never have to do this. It’s only when something goes wrong and the system data grows and grows. If your System Data is that huge? Yeah, something’s gone wrong, When I had it on my iPad, roughly 45Gb that wasn’t going down after a week or so, everyone - including Apple Support - told me to go with the nuclear option: back up to Mac/PC => reset device as new => restore from Mac/PC. Yes, it’s a pain. Yes, it takes some time. And yes, it shouldn’t happen. But again, something has, at this point, gone wrong. It might work, ie get rid of the vast majority of the System Data, if you do an iCloud backup, reset as new, then restore from iCloud backup… but it absolutely does work when it’s backed up/reset as new/restored from backup via a Mac or PC. When I did it, the System Data not only immediately reduced down to single figures, it’s stayed around the 10Gb mark ever since.
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Same lmao
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MacRumors
macrumors.com › 2021 › 09 › 22 › ios-15-iphone-storage-almost-full-alert
Some Users Plagued by Incorrect 'iPhone Storage Almost Full' Alert After Updating to iOS 15 - MacRumors
September 22, 2021 - A flood of users has taken to Twitter over the last 24-48 hours to share their experience that after updating to iOS 15, they see an "iPhone Storage Almost Full" warning inside of Settings, despite their ‌iPhone‌ having a sufficient amount of storage left. Apple Support's Twitter account is riddled with users reporting the bug. @AppleSupport updated my phone and now under settings it says phone storage almost full. I got to click on it and nothing happens. So I’m stuck with the badge — ♡︎мonιca мelanιe♡︎ (@monica__melanie) September 20, 2021
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Reddit
reddit.com › r/ios › ios 15: storage almost full bug - fix?
r/ios on Reddit: iOS 15: Storage almost full bug - fix?
September 5, 2021 -

I updated to iOS 15 a while ago and since updating I get this message that my storage is full (iPhone XS). I'm not really annoyed by that, but I also can't use WhatsApp on which I rely heavily on.

Did anyone find a fix for this issue. I've obviously tried to update to 15.1 and turning on and off my iPhone multiple times. Should I back up my iPhone and try to restore it from the backup

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More info on my previous answer: There is no 'fix' for the 'Storage Bug' until Apple implements such fix in iOS and releases a solution in a new version in iOs. That said, there are 'workarounds' for the 'Storage' Bug. In each case, ie. each workaround case depends on what scenario you have. You will have to check what (scenario) you have (do you use icould?, do you have stuff/data in icloud that is synced to your iphone?, do you download your own music from iTunes via your computer to your ioS device? or use iTunes to sync/download your music directly from it's online service to your iphone? and the list of variables goes on and on an on.) What 'worked' for me was to setup the device as a 'brand new' device (eventhough I had a backup and was prompted in itunes if I wanted to 'restore' from the backup i just had made) and synced my data ie. synced 'Music' first, then when completed, synced 'Movies', then 'TV Shows', 'Books', etc, etc syncing 'one' at the time as I wanted to make sure, if the 'bug' repeated itself, that I woudl be able to determine which 'sync' Data Group (ie. Music, Books, TV Shows, Movies, etc) would cause the issue. After sycing all of my data, the 'storage' bug problem did NOT come back (as data had been 'uploaded' and not 'restored' from backup). This proces is way longer than just 'restoring from Backup' but worked for me. If you set up the device as a 'brand' new device, then your iphone (ios Device) will literally have all the space available. Then is just a matter to 'sync' your data again (ie. Music, Books, etc)... for this to work you must have your data on your computer and/or cloud and just opt to 'sync' each part (ie. sync 'Music' first, when completed, then sync 'Movies', then 'TV Shows', 'Books', etc, etc) always 'one at the time, so that you can control what is being synced to your device. Note: on a second device (iphone) which suffered the same storage bug phenomena, I set it up as a 'new' device, meaning I did NOT restore it from 'backup' instead of syncing my data 'one at the time' i opted to then sync, music, tv shows, movies, etc all at once and just clicked 'apply' in itunes after turning on the check mark in itunes to each of them and all worked well. Based on my experience, it seems that the 'restoring from backup' seems to be the trigger for the storage bug, which is a real bug in iOS.
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MacRumors
forums.macrumors.com › news and article discussion › macrumors.com news discussion
Some Users Plagued by Incorrect 'iPhone Storage Almost Full' Alert After Updating to iOS 15 | Page 5 | MacRumors Forums
September 22, 2021 - That’s not an iphone storage almost full. Not by any standard. This is already a documented bug. Third, it’s also already been documented that the notification doesn’t do anytime when you tap on it, unlike a true full storage notification (and I can confirm this myself), and that deleting stuff doesn’t clear the notification at all in this case. We have to wait for the next software update, which will presumably fix this bug. Last edited: Sep 26, 2021 ·
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iDrop News
idropnews.com › how-to › iphone-storage-mysteriously-filling-up-it-might-be-this-system-data-bug › 211540
iPhone Storage Mysteriously Filling Up? It Might Be This System Data Bug
April 11, 2024 - While it’s normal for System Data on your iPhone to take 1–2GB of storage, some people have seen their iPhone’s System Data consume far more than this. In fact, 9to5Mac reported that in one case, iOS System Data consumed 60 GB of storage — ...
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PassFab
passfab.com › iphone › iphone-storage-full-bug-ios-16.html
[iOS 17 Supported] Fast Fix iOS 17 iPhone Storage Full Bug 2025
October 23, 2025 - This iphone storage not loading bug often doesn’t hold for too long and it automatically gets fixed in the Apple’s next iOS release. Here are the common queries of users pertaining to iPhone memory full device will not work that you should know about.
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iMobie
imobie.com › home › support › fix saying iphone storage full but nothing on phone
[Fixed]Saying iPhone Storage Full But iPhone Nothing on Phone - iMobie
March 26, 2024 - If your iPhone keeps saying storage is almost full but it’s not, you may want to find out the cause of the issue and fix it to be able to store more items on your device.