Delete unused apps
Offload unused apps
Remove large videos
Delete duplicate photos
Enable iCloud Photos
Optimize iPhone storage
Clear Safari history and website data
Delete old messages and attachments
Remove downloaded music, podcasts, and movies
Delete offline files in apps
Empty Recently Deleted album
Back up and restore the iPhone
Use iCloud Drive or another cloud storage service
Transfer photos and videos to a computer
Check storage usage in Settings
Reset and reinstall only necessary apps