Answer by fercen for Blinking light
It is the proximity sensor using inrared beam, which cameras can detect. About the red... well I'd assume the band sligtly overlaps with visible light.
View ArticleBlinking light
As you might notice from some videos with the phone, there is a small rapidly blinking light in the top right corner of the device. It is only visible in videos. ![image...
View Article
More Pages to Explore .....