First time I launch the Health app and use the new feature to measure HR using fingers and camera, it works correctly because it uses the camera next to the flash (the 2.0x camera).
If I try to measure HR a second time using the finger and flash, the app uses second camera (1.0x camera) instead of the upper one, but this camera is below the flash and because of this there's not enought brightness in the finger, and it's never recognized. Putting the finger diagonally over the flash and camera doesn't work, it never "detects" the finger.
If you reboot the phone, the HR measure works again only once, and then the bug returns until you kill the app or reboot the device.
Device is Redmi Note 8 (ginkgo, 4 cameras).
HR Detection works fine and without issues if you point the flash and camera to your wrist instead of your finger, but HR detected is slightly lower (around 5 - 7 bpm lower than the finger)
If I try to measure HR a second time using the finger and flash, the app uses second camera (1.0x camera) instead of the upper one, but this camera is below the flash and because of this there's not enought brightness in the finger, and it's never recognized. Putting the finger diagonally over the flash and camera doesn't work, it never "detects" the finger.
If you reboot the phone, the HR measure works again only once, and then the bug returns until you kill the app or reboot the device.
Device is Redmi Note 8 (ginkgo, 4 cameras).
HR Detection works fine and without issues if you point the flash and camera to your wrist instead of your finger, but HR detected is slightly lower (around 5 - 7 bpm lower than the finger)