How to Back Up Android Before Deleting Files
Check what your Android backup covers and verify your files before freeing space.
Confirm which Google account stores your backup
Open Settings and search for Backup. Check the Google account and the latest backup status. If you start a new backup, wait for it to finish before relying on it.
Verify photos and local documents separately
In Google Photos, check backup status and whether it includes the device folders you care about. Copy important local downloads and documents to a computer or cloud drive. Open a few files from the copied location to make sure they transferred correctly.
Check apps with their own backup settings
Some apps manage their own local data. Review important chat apps, offline notes, and authentication tools for backup or transfer options. After checking those copies, return to your storage settings to remove files you no longer need on the device.