You accidentally briefly swipe left while unlocking, causing it to flash the camera, which causes the camera indicator to stay on for a while. You can reproduce it by locking your phone, touching the screen once, then swiping a centimeter left then back.
No guarantees—I’m no expert:
Turning off Face ID doesn't mean turning off the camera. Under "Camera," you should be able to see which app used it last. Settings > Accessibility > Face ID & Attention > Attention Aware Features and Settings > Face ID & Passcode > Require Attention for Face ID. Turn it off and restart.
It would be pretty bad if it didn't activate immediately. This actually gives me more confidence in iOS. Any time the camera is accessed, even if for one frame, the light turns on and stays on even after you're done.
You accidentally briefly swipe left while unlocking, causing it to flash the camera, which causes the camera indicator to stay on for a while. You can reproduce it by locking your phone, touching the screen once, then swiping a centimeter left then back.
This is most likely the reason. I will put it to the test. Thank you.
No guarantees—I’m no expert: Turning off Face ID doesn't mean turning off the camera. Under "Camera," you should be able to see which app used it last. Settings > Accessibility > Face ID & Attention > Attention Aware Features and Settings > Face ID & Passcode > Require Attention for Face ID. Turn it off and restart.
No this is irrelevant -- he's just turning on the selfie camera by briefly swiping sideways. It's completely harmless.
So interesting that it is activated so instantly. I am going to test this.
It would be pretty bad if it didn't activate immediately. This actually gives me more confidence in iOS. Any time the camera is accessed, even if for one frame, the light turns on and stays on even after you're done.