
Security feature I really miss from iOS: biometric lock on ANY app
I'm currently transitioning from an iPhone to GrapheneOS on a Pixel 10a. Overall, I like the feeling of having more control over my OS. That said, there is one security feature from iOS that I really miss: biometric lock on any arbitrary app.
I think GrapheneOS is fantastic when the phone's state is before-first-unlock and when locked. However, if a malicious actor (thief) were to swipe the phone from your hands while you had it unlocked (or somehow learned your login PIN), I feel significantly worse on GrapheneOS than I did with iOS.
Now, is that a common or likely scenario? Probably not, so I'll live with it. But, on iOS, I felt very in control of locking any app with sensitive info or ability to initiate payments behind biometrics without relying on the app developer to implement it.
I don't know if this would require AOSP to adopt a similar feature, or if it's something Graphene can implement on top of AOSP, but I really do hope it eventually makes its way to the OS.
EDIT: to be clear, Private Space is close, but not the same. It can only automatically re-lock after reboot, system lock, or timed after system lock (as far as I can tell). With iOS, you can require biometrics on every app launch or returning to it.
EDIT 2: It looks like Android 17 was announced to be including this feature, but that it has been missing from the beta builds. I don't know if there are any more recent changes since this article was published in early July: https://www.androidheadlines.com/2026/07/android-17-missing-app-lock-feature-still-coming.html, or if it is/isn't still planned for Android 17.