I see I understand it's a bit annoying when the phone won't open instantly when using face recognition.
Just simple tips, You want to make sure you are not wearing glasses when unlocking the device.
Or if you set up your face recognition wearing glasses make sure you are wearing glasses when you unlock the device.
And also you want to make sure there are no particles interfering in front of your iris scanner.
If the problem does persist, I would recommend a reset factory to the device and check for an update.
... View more