Uninstall unused apps: Start by uninstalling apps that you haven't used in a long time or those that you don't need. This can free up a significant amount of space on your device.
Clear app cache: Over time, app cache can accumulate and take up space on your device. Go to Settings > Apps, and clear the cache for individual apps or for all apps.
Delete unnecessary files: Remove any unnecessary files, such as duplicate photos, videos, and documents. Use a file manager app to locate and delete these files.
Transfer files to an external storage device: Move any large files or documents to an external storage device, such as an SD card or USB drive.
Clear browser cache: Clear the cache and cookies from your web browser to free up space on your device. Go to Settings > Apps > Browser, and clear the cache and cookies.
Delete old messages: Delete old text messages, MMS messages, and call logs. You can do this manually or use a cleaning app.
Use a cleaning app: Download a cleaning app, such as Clean Master, Cleaner, or Avast Cleanup, to remove junk files, clear cache, and optimize your device.
Disable unused system apps: Disable any system apps that you don't use or need. Go to Settings > Apps > All Apps, and disable any apps that you don't need.
Remove unused widgets: Remove any unused widgets from your home screen. Long-press on the widget, and drag it to the trash can.