This is all about to change, as Google is rolling out an update for the Photos app that addresses both of these issues. Items in the Locked Folder will now be backed up and synced to your Google account and will now be accessible on all your devices, including iOS and the web.
Source – Google
Google states that these changes will begin to roll out today on existing Android devices, however, as it usually goes with these Google staged rollouts, it might be a while before you see the feature pop up in your Google Photos app. However, I would stay on top of it and make sure I’m on the latest version of the app, which as of right now on Android is v6.9. As a feature that started out as a Pixel exclusive, it will be refreshing to see how it has progressed from expanding to other Androids and now to iOS and the web version with the addition of cloud backup.
