How to fix "The last backup could not be completed"?
My iPhone has stopped backing up to iCloud. I've signed out, and back in to iCloud; restarted the iPhone; confirmed ample storage on iCloud, and on the iPhone, available storage is slightly greater than "Next Backup Size". Other iCloud services work as expected, and backup to Mac works. This problem appeared one week ago. Previously, iCloud backups worked seamlessly. Can anyone help?
iPhone 6s, iOS 14.4.2
iPhone 6s, iOS 14