Delete unused apps
Clear app cache and data
Remove duplicate photos and videos
Back up media to cloud storage
Transfer files to a computer
Use a microSD card if supported
Delete old downloads
Remove offline music, podcasts, and maps
Empty trash or recently deleted folders
Uninstall large games you do not use
Clean up messages and attachments
Disable automatic media downloads in chat apps
Move files to external storage if available
Use storage cleanup tools built into the phone
Reset the phone after backing up if storage is still full