How to clean iPhone iOS system with too much data usage?

How do I see what's taking up data space on the rest of iOS?

existiOSOn 15+ systems, Rootless/RootHide jailbreaks allow you to see what data is taking up storage space via the InternalStorageSettings plugin.

How do I install InternalStorageSettings?

existJailbreak software source book list to find alien sourcesand added to the Jailbreak Store

Search for Preferenceloader in Sileo and install it!

Search for InternalStorageSettings in Sileo and install it!

Now available in Settings - General - iPhone/iPadStorage Space - System Data View occupancy details directly

How to clean up the memory occupied by other system data?

After installing InternalStorageSettings you can see the occupancy details within the settings, and free up storage space by cleaning up the occupied apps, adjusting setting items, and also byFilza File ManagerClean up files that are taking up storage space.