Delete unused apps
Offload unused apps
Review and delete large video files in Photos
Turn on iCloud Photos to store full-resolution photos in iCloud
Manage Messages: delete large conversations and attachments
Delete old iOS backups in Settings > General > iPhone Storage
Clear Safari downloads and website data
Remove large files from Files app (Downloads, iCloud Drive, local storage)
Check and delete podcasts and offline media
Manage music: remove downloaded songs and albums
Empty Recently Deleted in Photos and in the Files app
Disable automatic downloads for Photos, iCloud Drive, or other media
Reduce iCloud Drive storage usage by deleting large documents
Upgrade iCloud storage in Settings > [your name] > iCloud > Manage Account Storage