Delete unused apps
Offload unused apps
Remove large videos
Delete old photos and screenshots
Empty the Recently Deleted album
Clear Safari history and website data
Delete downloaded music, podcasts, and movies
Remove old messages and attachments
Set Messages to keep conversations for 30 days
Review and delete large files in the Files app
Clear app caches where available
Turn on iCloud Photos and optimize iPhone storage
Back up and remove local photos and videos
Delete duplicate photos and contacts
Restart the iPhone after cleanup