Background: I'm using a MacBook Pro with M1 chip and Big Sur V11.1 (got it last month). One thing really annoys me is that when I connect my iphone, sync starts automatically and it takes up 20GB to when all iphone files are backed up.

Issue: So I wanted to delete the sync files using "Reduce Clutter" in "About This Mac -> Storage". It worked fine for two weeks after I purchased the MacBook, but recently it starts to crash every time when I open "About This Mac -> Storage -> Manage" and I wasn't even able to get the time to click "Review Files" under "Manage". I tried to restart the system but had no luck at all. See screenshots below for crash report.



Help: Does anyone else encounter the same issue? How to resolve it? Is there a way (say, command line) to delete synced iphone files without clicking "About This Mac -> Storage"?

"Manage-> Review Files" is a really convenient way to view and remove redundant files to save storage. It would be great if there is a way to revive that functionality if possible.

Thanks in advance!


1 Answer 1


iOS installer are located in


and you need to find your device's folder

iOS backups are located in

~/Library/Application Support/MobileSync/Backup

or you can select iOS device via side bar, select General tab and then Manage backups enter image description here

  • Thanks a lot, that's the fold I need. Still, the crash issue remains, which is very annoying.
    – booksee
    Commented Apr 19, 2021 at 18:16

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