iOS system using large amount of storage

I keep running out of storage and when I check it, the actual phone system is taking up the majority of my storage. How do I fix this, or will it go away?

iPhone 16 Pro, iOS 26

Posted on Nov 3, 2025 6:25 AM

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Question marked as Top-ranking reply

Posted on Nov 3, 2025 6:31 AM

Back up your phone, ideally on iCloud....and.....on a computer

Erase your phone

Set up the phone again using your back up to restore


If you are unsure about any of this, best to make an appointment at the Apple Store / Genius Bar


No guarantees, but this about all that you can do at this point.


I reduced System Data from about 40 GB to under 10 GB when I tried this, but your mileage will vary

1 reply
Question marked as Top-ranking reply

Nov 3, 2025 6:31 AM in response to J-sap

Back up your phone, ideally on iCloud....and.....on a computer

Erase your phone

Set up the phone again using your back up to restore


If you are unsure about any of this, best to make an appointment at the Apple Store / Genius Bar


No guarantees, but this about all that you can do at this point.


I reduced System Data from about 40 GB to under 10 GB when I tried this, but your mileage will vary

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iOS system using large amount of storage

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