Thank you, I thought it seemed logical but wanted to know if you had technical knowledge backing your reasoning.
Glance works by using the proximity sensors to detect motion in front of the screen. That's why four sensors would increase response time and reliability. In a dark setting the proximity sensors struggle to detect motion more than usual, and if you accidentally cover the sensor or particularly bright glare disrupts it, the Glance screen may not turn on or may be delayed. Four sensors--one placed in each corner--would ensure that if you're covering one three more are there to detect motion, and so on. Four sensors has greater chance of detecting motion in dark situations as well. Even if an AMOLED has a faster response time, it can't adapt to those other situations. At least, this is my reasoning.
Thanks. I understand how proximity sensors are used, but I was wondering how Glance is displayed on the screen. All I have seen thrown around is "display memory" haha.
Most smartphone proximity sensors emit infrared and detect how much is reflected. Visible light should not affect their functionality.
Not saying that four sensors is a bad thing, the more the better. Would even be suitable for "3D Touch" applications