The ‘automatic phone backup’ feature that was introduced last year for Google One paid users has now been made free for everyone, regardless of an active subscription or not. This feature will also be available for iPhone users for free.

source https://gadgets.ndtv.com/apps/news/google-one-ios-app-coming-soon-free-phone-backups-new-storage-manager-features-introduced-2271206#rss-gadgets-all