Delete unused apps
Offload unused apps
Clear Safari history and website data
Remove large photos and videos
Empty the Recently Deleted album
Enable iCloud Photos
Optimize iPhone Storage
Delete old messages and attachments
Set Messages to keep messages for 30 days
Remove downloaded music, podcasts, and videos
Clear app caches where available
Review and delete large files in the Files app
Delete duplicate photos and screenshots
Update apps and iOS
Restart the iPhone after cleanup