How to Fix: iPhone Storage Almost Full iOS 17/18 Bug [2024]

If you are facing the iOS 17 bug “iPhone storage almost full”, you’re not alone. This guide helps you to figure it out. You may also find solutions in this guide.


By Demi / Updated on July 8, 2024

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iOS 17 bug - iPhone Storage Almost Full

I upgraded iPhone X from iOS 16.3 to 17 yesterday and now I’ve got the bug. There is an annoying red badge on iPhone Storage Almost Full. Tapping the warning nothing happens. I’ve 14.2 GB of free space.

- Question from MacRumors

Have you received the notification saying that iPhone Storage is Almost Full after iOS 17 or iOS 18 beta update? It appears to be a glitch in iOS 17/18 as many users posting, and Apple hasn’t responded to this bug yet.

iPhone Storage Almost Full

But you can keep on reading this article, you will get more detailed information about the bug you may concern, as well as three common methods you can try to solve this issue.

Overview of iOS 18/17/16 bug: iPhone Storage Almost Full

It’s really bothersome that the “iPhone Storage Almost Full” may appear about every 10 minutes after iOS 17/18 update. What’s worse is that the iPhone Storage Almost Full notification won’t go away even if you tap the warning. It just takes you to the iPhone storage page in Settings where you may find your device has plenty of available capacity left.

• Possible reason for getting iPhone Storage Almost Full notification
No one knows the reason for sure up to now. The possible reason may be that your iPhone misreads the allocating storage after updating iOS.

3 tips to avoid iPhone storage full after iOS 17/18 update

As the issue occurs due to iOS 17/18 update, it’s not an easy job to fix it. It is reported that some iPhone users get rid of iPhone storage full bug successfully. Hope you can also fix it with one of the methods mentioned below.

It’s worth mentioning that to avoid any unexpected error, it’s suggested to make a full iPhone backup to avoid data loss.

Method 1. Force restart the iPhone

You may have tried to fix the issue by normal restarting the iPhone, if it doesn’t work, force restarting the iPhone will be a nice try. Detailed steps to force restart your iPhone differ from the iPhone model.

For iPhone 8 and later: Quickly press and release the Volume Up button > Quickly press and release the Volume Down button > Press and hold the side/top button until you see the Apple logo.
For iPhone 7/ 7 Plus: Press and hold both the Power button and Volume Down button > Release both buttons until the Apple logo appears.
For iPhone 6 and earlier: Press the Home button and the Power button at the same time > Release both buttons until you see the logo of Apple.

Hard Reset iPhone

The notification of iPhone storage almost full will go after your iPhone restarts but the issue may appear again after some time of use.

Method 2. Factory reset iPhone

A factory reset of iPhone can fix most of iPhone issues you may meet. Hopefully, you can get out of this bug after trying to erase and restore iPhone.

To factory reset iPhone, go the Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.

Erase Content Settings iOS 15

Method 3. Put iPhone in DFU Mode

if the bug remains after trying the two methods above, then put iPhone in DFU Mode to restore it. The DFU (Device Firmware Update) Mode is the deepest restore mode, which completely erases everything on your iPhone and makes it like a brand new iPhone. Tutorials about avoiding iOS 17 “iPhone Storage Almost Full” bug via DFU Mode are as follows.

Step 1. Connect your iPhone to a computer and launch iTunes.

Step 2. Put your iPhone in DFU Mode.
iPhone 8 and later: Quickly press and release the Volume Up button > Quickly press and release the Volume Down button > Press and hold the Side button until the screen goes black.
• iPhone 7/ 7 Plus: Press and hold both Power and Volume Down button for 8-10 seconds > Release the Power button but still hold the Volume Down button until your iPhone appears in iTunes.
• iPhone 6 and earlier: Press and hold both Power and Home button for 8-10 seconds > Release the Power button but still hold the Home button until your iPhone appears in iTunes.

iPhone DFU Mode

Bonus: Other iOS 17/18 storage bugs you may encounter

Besides the warning iPhone Storage Almost Full in iOS, you may encounter other storage buys just like what have mentioned below.

① Wrong storage capacity reports
Since your iPhone may misread the storage space, you may encounter the storage bug that the available free storage is higher than the total capacity, which is obviously impossible.

Wrong Storage Capacity Report

Chances that you may fix the bug by browsing Settings > General > About and compare the Capacity and Availability readings.

② Storage report fails to load
The third glitch of iPhone storage is that the iPhone storage report fails to load after iOS 17/18 update.

When you go to Settings > General > iPhone Storage, the iPhone storage screen stop displaying the Recommendations and Data Usage by apps like the picture shown below.

iPhone Storage Report Not Loading

Since the notification of iPhone Storage Almost Full in iOS 17 is a bug, Apple’s next release of iOS should provide a permanent remedy for the problem.

Anyway, the three nice tries may help you out. If they don’t, you may need to endure the bug for another couple of days until the next version of iOS coming out. You may also need the guide: iPhone storage full to manage your storage space on iPhone.

Warm tip: Backup iPhone in case of iPhone problems

Besides kinds of bugs after you update iOS 17/18, the new system also brings the risk of data loss. Hence, it is recommended you backup iPhone with powerful software - FoneTool, which provides you an easy and professional backup experience.

★ Two types of backup: Full Backup & Selective Backup
    ☆ Full Backup: Literally, it can backup all contents on your iPhone, which is helpful when it comes to resetting iPhone and any other situations.
    ☆ Selective Backup: The function Selective Backup provides you an incremental backup to satisfy your daily backup demand.
★ Wide compatibility. FoneTool supports iPhones from iPhone 4 to the latest 15, as well as different models of iPad and iPod. It also works well with kinds of versions of iOS like iOS 17/18.

Free download FoneTool to your computer, and follow the steps below to fully backup your iPhone.

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

Step 1. Connect your iPhone to the computer > From the main interface of FoneTool, click Phone Backup > Choose Full Backup and click Get Started.

Full Backup

Step 3. You’re able to enable Backup encryption to protect the privacy of your data like Fitness records, Health, and Keychain.

Backup Encryption

Step 4. Choose a backup path to save the backup file > Click Start Backup to complete the task.

Start Backup

Besides common contents like photos, videos, music, contacts, text messages, etc., FoneTool also helps you backup apps (including data files and preference), Safari (including history and bookmarks), and system settings.

FoneTool is also one of the best file transfer app for iPhone to PC which enables you to transfer data among iOS devices and Windows PC.

To organize photos library to free up space on iPhone, you can try the Photos Deduplication from Toolbox in FoneTool to automatically delete duplicate photos for you.


It seems that it is inevitable to encounter some bugs after iOS update, just like the warning iPhone Storage Almost Full in iOS 18/17/16. You may also find iPhone slow after update. Hope you’re lucky enough to fix them. To minimize your loss, please remember to backup your iPhone.

Demi · Editor
Demi is an editor of FoneTool group as well as a good advisor in the area of iOS-related issues. She does well in finding solutions to people's problems. She enjoys traveling, gardening, and watching movies. She spends most of her free time with her pet and family.