Why is "Other" storage in iPhone 8 taking up over 50 GB?
Try resetting the phone.
Back it up first using iTunes (or the Finder on macOS Catalina.) And don't forget to give the backup a password so it saves your passwords.
Then go into Settings &gt; General &gt; Reset and erase all content and settings.
This will reset it to factory defaults and delete the caches and temporary files or whatever else is taking up that space.
Then restore the backup you just made and most, if not all, of that &quot;other&quot; storage being taken up should be reduced substantially.
If not you may want to look at Settings &gt; General &gt; iPhone Storage and see if you have a particular app that is holding on to a lot of storage space.