Some Users Plagued by Incorrect 'iPhone Storage Almost Full' Alert After Updating to iOS 15

Just two days after Apple released iOS 15 and iPadOS 15 to the public, a new wave of user reports from social media are already pointing to some widespread bugs, this time pertaining to reported storage on a device.

iphone storage almost full
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.

Annoyingly, the warning inside of Settings can't be dismissed, and tapping on it only takes users to the ‌iPhone‌ Storage page within Settings, where they're reminded that their device, in the majority of cases, still has an adequate amount of storage left. A post on Apple Support's Community Forums, which has racked up over 900 views at the time of writing in just over 13 hours, also includes users reporting the bug.

The warning, however, is not the only storage-related bug that's irking some users. Other reports on Twitter indicate that iOS 15 has resulted in a bug in which the amount of available storage on a device is sometimes shown to be more than the device's capacity. In other cases, an iOS 15 bug results in the wrong tabulation for how much storage a user's content is taking up.

In all cases, Apple Support is advising users to restart their devices, but that does little to address the problem. Some of the bugs experienced by users appeared during the beta testing period for iOS 15 over the summer, which is meant to fix as many bugs and issues as possible before the update becomes widely available.

This week, Apple began testing iOS and iPadOS 15.1; however, given the widespread nature of these bugs, Apple may decide to release iOS 15.0.1 to address the storage bug and other improvements and security enchantments. We've reached out to Apple for comment.

Related Forum: iOS 15

Popular Stories

Apple Announces Special Event in New York Feature 1

Apple Reportedly Plans to Unveil at Least Five New Products Next Week

Sunday February 22, 2026 9:48 am PST by
In his Power On newsletter today, Bloomberg's Mark Gurman said Apple will have a three-day stretch of product announcements from Monday, March 2 through Wednesday, March 4. In total, he expects Apple to introduce "at least five products." Subscribe to the MacRumors YouTube channel for more videos. A week ago, Apple invited selected journalists and content creators to an "Apple Experience" in...
iOS 26

iOS 26.3.1 Update for iPhones Coming Soon as 'Apple Experience' Nears

Sunday February 22, 2026 5:29 pm PST by
Apple's software engineers are testing iOS 26.3.1, according to the MacRumors visitor logs, which have been a reliable indicator of upcoming iOS versions. iOS 26.3.1 should be a minor update that fixes bugs and/or security vulnerabilities, and it will likely be released within the next two weeks. Last month, Apple released iOS 26.2.1 with bug fixes and support for the second-generation...
iPhone 18 Pro Deep Red Feature

Apple is Testing These iPhone 18 Pro and Foldable iPhone Colors

Sunday February 22, 2026 8:41 am PST by
The special new color that Apple is considering for the iPhone 18 Pro and iPhone 18 Pro Max this year is red, according to Bloomberg's Mark Gurman. Specifically, he said that Apple is testing a "deep red" finish for the two devices. If this rumor materializes, it would be the first time that the Pro and Pro Max models ever come in red, and the iPhone 18 Pro models would be the first...
tim cook data privacy day

Tim Cook Warned by CIA That China Could Move on Taiwan by 2027

Tuesday February 24, 2026 4:03 am PST by
Apple CEO Tim Cook was among a handful of top tech executives who attended a classified CIA briefing warning that China could attack Taiwan by 2027, according to a sweeping investigative report by The New York Times ($). The previously unreported briefing was apparently held in a secure room in Silicon Valley in July 2023. The meeting is said to have been arranged at the request of the...
airpods pro 3 design

Higher-End AirPods Pro Launching This Year

Monday February 23, 2026 2:31 pm PST by
While the AirPods Pro 3 launched less than six months ago, it has been rumored that Apple plans to unveil new AirPods Pro this year. Instead of AirPods Pro 4, it has been rumored that the new AirPods Pro will be a higher-end version of the AirPods Pro 3. This would be similar to the regular AirPods 4, which are available in two versions, with and without active noise cancellation....

Top Rated Comments

kycophpd Avatar
58 months ago
I guess they gave me some of their storage. I’m still trying to figure out my available storage compared to the actual storage size…

Attachment Image
Score: 25 Votes (Like | Disagree)
58 months ago
This is the first time I didn't bother upgrading to a new version of iOS as soon as it was available. I turned off auto update when Apple announced CSAM and didn't bother turning it back on.
Score: 17 Votes (Like | Disagree)
58 months ago
I’m still annoyed by the Other data use. Depending on device, sometimes it occupies a crazy amount.

Attachment Image
Score: 13 Votes (Like | Disagree)
ChrisMoBro Avatar
58 months ago
“Plagued” lol. First world problems.
Score: 8 Votes (Like | Disagree)
58 months ago
It's always something. 5.0.1 here we come.
Score: 7 Votes (Like | Disagree)
58 months ago

This is the first time I didn't bother upgrading to a new version of iOS as soon as it was available. I turned off auto update when Apple announced CSAM and didn't bother turning it back on.
Same here.
Score: 6 Votes (Like | Disagree)