Even without a paid membership, the feature is free, the backups count against your free Google storage allowance of 15GB. The backup feature is a convenient and worry-free way to preserve your text, contacts, apps, photos, and videos.
Most Android devices already support backing up data to the cloud thanks to Google Play Services backup manager service which uploads files to a private directory on users’ Google Drive accounts. However, this backup solution doesn’t sync MMS or photos and videos in original quality, which is a perk available from Google Photos/One.
Last year, paid members already got access to this feature on Android, which stores your texts, contacts, apps, photos, and videos in Google’s cloud. The “free” backups are now available to Android users. iOS users will get access to it once the Google One app rolls out on iOS in the near future.
Google is also introducing a new storage manager tool in Google One, which is available in the app and on the web, and which allow users to delete files from across the various services that One supports, including Google Drive, Gmail, and Google Photos, in order to free up space.