iPhone 11 Pro Max showing iOS 17.7.2 as 21GB and System Data as 8GB in iPhone Storage

Hi all


After recently updating my iPhone 11 Pro Max to 17.7.2 (from 17.7.1) via OTA (which I never normally do as I prefer to use Finder) I appear to have lost all my phone storage with the update showing as taking up over 20Gb space, while system data is 8Gb.


Im pretty sure this is exorbitant and should be nowhere near this size.


Any ideas how to get it trimmed back?


Many thanks


Posted on Nov 25, 2024 7:01 AM

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Posted on Nov 26, 2024 6:25 AM

Found the solution.

There was an iOS update (iOS 18.1.1) already downloaded waiting for install and wit was listed way down the list of apps by size.

For some reason the update file was only showing as a few hundred Mb (which seems very suspect), but when I deleted it, lo and behold my iOS 17.7.2 file size (in pic above) instantly halved and now shows as just 10.52Gb. Much more like it!


4 replies
Question marked as Top-ranking reply

Nov 26, 2024 6:25 AM in response to Phillipwj

Found the solution.

There was an iOS update (iOS 18.1.1) already downloaded waiting for install and wit was listed way down the list of apps by size.

For some reason the update file was only showing as a few hundred Mb (which seems very suspect), but when I deleted it, lo and behold my iOS 17.7.2 file size (in pic above) instantly halved and now shows as just 10.52Gb. Much more like it!


Nov 25, 2024 7:56 AM in response to Phillipwj

I cant seem to find any way to handle this.

My flatmate is running iOS 17.6 on his iPhone and the iOS is half the size!!

I know the System Data can apparently go up/down but I'm pretty sure that main iOS shouldn't be anything like this size.

I'm at a loss, short of wiping the phone and restoring it, but of course that will then also update to iOS 18 which I'm not entirely convinced I'm ready for just yet.

Or is there a way to entirely wipe the whole thing including iOS and restoring but keeping it at 17.7.2 ?

Many thanks

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iPhone 11 Pro Max showing iOS 17.7.2 as 21GB and System Data as 8GB in iPhone Storage

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