iOS 26.1 and system data keeps growing after I delete things off the phone to keep me at “storage full”. Well over 30gb right now.

Question

iOS 26.1 and system data keeps growing after I delete things off the phone to keep me at “storage full”. Well over 30gb right now.

I have an IPhone 12 mini, 64gb.

I did the update for iOS 26.1. The iOS is taking 18.5gb and system data is at 11.25gb… so pretty much half of the phone and got the dreaded “storage full” message.

Searching around on here, I tried “rebooting” then offloaded things to the cloud. The system data then climbed to fill the storage I just freed.

I moved all my photos and videos to a little flash drive, deleted from the phone then emptied the “recently deleted” folder.

The iOS just grew again to fill that gap.

I swear once I’m done offloading apps, I’m going to have a 64gb iOS and an unusable phone.

Can anybody help shed some light on this?

iPhone 6s, iOS 13

Posted on Nov 18, 2025 3:27 PM

Reply

Answer 1

TheLittles

Level 10

204,563 points

Nov 18, 2025 3:40 PM in response to emiracleworker

"iOS 26.1 and system data keeps growing after I delete things off the phone to keep me at “storage full”. Well over 30gb right now."

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Clearing the System Data:

Use my User Tip: How to Clear "System Data" in your iPhone's Storage: - Apple Community

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Answer 2

TheLittles

Level 10

204,563 points

Nov 18, 2025 3:41 PM in response to emiracleworker

"iOS 26.1 and system data keeps growing after I delete things off the phone to keep me at “storage full”. Well over 30gb right now."

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Troubleshooting iPhone Storage:

Internal storage cannot be upgraded. It is what it is. So, the maximum internal storage capacity never increases, even if you upgraded your iCloud plan. Learn More here: What's the Difference Between Device Storage and iCloud Storage? Apple Support

So, what to do...

Clear Space Using my User Tips:

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Answer 3

Nov 18, 2025 3:49 PM in response to TheLittles

Thank you. I realize the phone is only capable of 64gb, but it seems insane to me that the iOS is now well above 30gb and growing as I delete things to ensure the phone stays full.

my fear with the backup and restore is that the IOS then eats the full 64gb and there’s no room for a restore.

Reply

Answer 4

TheLittles

Level 10

204,563 points

Nov 18, 2025 3:54 PM in response to emiracleworker

"Thank you. I realize the phone is only capable of 64gb, but it seems insane to me that the iOS is now well above 30gb and growing as I delete things to ensure the phone stays full.: my fear with the backup and restore is that the IOS then eats the full 64gb and there’s no room for a restore."

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So, perform the erasure.

During the restoration process, the iOS is erased in full to 0%, before the restore is performed.

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iOS 26.1 and system data keeps growing after I delete things off the phone to keep me at “storage full”. Well over 30gb right now.

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