Level 1 (4 points)

iPhone 17 Pro System Data storage bloats during photography, causing 'Storage Full' error

Hi everyone,

My girlfriend has an iPhone 17 Pro 256 GB, and we are experiencing a very frustrating issue with System Data storage bloat, specifically when she takes photos.

Normally, her System Data sits around 12–14 GB. However, during a photo session, it suddenly balloons up to 40 GB or more. This immediately triggers a "Storage Full" error and prevents her from taking any more pictures (even though she natively has about 30 GB of free space). A simple restart sometimes temporarily fixes the issue and clears the bloated data.

It also usually happens more when there's an update in queue however she has automatic updates completely disabled, so I don't understand the connection.

Some things about it:

iCloud Photos sync and ProRAW are both completely turned OFF.
I noticed that right after taking a photo, the file size is around 19 MB before it eventually "shrinks" down to a normal HEIF size (2-4 MB). Perhaps the Neural Engine buffer gets stuck or overwhelmed when taking multiple shots, but that doesn't answer the question why does it not clear after some minutes.

We already did a full factory wipe last year before because of this issue, but it stayed unresolved, she's always running on the latest stable iOS version.

My questions are:

Has anyone else experienced this specific memory leak / cache buildup during photography on the iPhone 17 Pro or some other iPhones?
Are there any known workarounds besides strictly using a third-party camera app?

Posted on Sep 15, 2026 7:17 AM

4 replies

Jeff Donald

Level 9 (64,078 points)

Sep 15, 2026 7:26 AM in response to AdamHuml

I have an iPhone 17 Pro Max and take a lot of photos. However, I choose to purchase an upgrade model with 512gb just to avoid these type of issues. I never get an iPhone much over 50% capacity and when I do, I generally move various assets to desktop drives etc. Operating with just 30g of total storage available is part of the issue and I would certainly move items off the device to an SSD etc. Adding additional iCloud storage is not a permanent solution and you should think of it more as a service that syncs files across multiple devices and not as off line assets.

What iOS are you using? Do you have LIVE motion enabled? Does your girlfriend shoot bursts of photos?

Jeff Donald

Level 9 (64,078 points)

Sep 15, 2026 8:59 AM in response to AdamHuml

I'd give it a 5 to 7 days for everything to settle down with iOS 27. Her iPhone 17 Pro will get the full Siri AI benefits. It takes a while to sync and index everything the iPhone, iCloud and accessories. It's important that she have the iPhone on a charger at night, locked (not turned off) and connected to WiFi. The device will do most of the work at night and give her a better user experience during the day.

The burst mode could be a major contributor. The device sets aside storage to use for this type of shooting and if near the limit, can cause issues. Are you shooting large bursts of photos on your iPhone Mini with just 8gb free? If not, it's a different scenario and not really relevant.

AdamHuml Author

Level 1 (4 points)

Sep 15, 2026 8:35 AM in response to Jeff Donald

256 GB seems like enough to me if we consider not having the system bloated with much of applications and other stuff. Personally I have 128GB 13 Mini and even having about 8 GB of free space the phone works like charm.

She just upgraded to iOS 27 and is not using the integrated burst shot function, but she shots a lot of photos in series (usually max 20-30 within minute).

She also has the LIVE motion disabled.

LD150

Level 10 (107,674 points)

Sep 15, 2026 8:48 AM in response to AdamHuml

If she wants to manage storage then why have iCloud Photos sync turned off??

she can enjoy up to 12TB plan there

30GB free space is obviously not enough for a prolific photographer

Originally posted at discussions.apple.com/thread/256357277