Same here. I had an iPhone 7 over 4 years, it started to say my storage was full. About a year back. I misinterpreted it to believe iCloud, so I upgraded my storage plan. Just to yet again, get the storage was full message. Deleted mail, message threads, photos, apps, and cleared cookies and safari data. Removed large attachments. and it was still showing HUGE amounts of “system” and “other” storage. Without a way to delete or tell me exactly what it was. Upgraded just two days ago to an XS, instead of 32GB I have 64GB and here we go again. EXCEPT WORSE. Now I’m using 29 GB OF OTHER. I cannot believe it. It is impossible to delete anything else. Anyone else have this issue? Can you explain exactly how to fix it?