?! bizarre question

[Simo Hero]

Hi Androiders !
Can sombody tell me please what is exactly these two black points next to the up front speaker of the HTC One ???
The one in the right of the speaker is for the frontal camera okey! but what about the two on the left?

Thanks !!

 

[Aquila]

Ambient light and proximity sensors. They handle auto-brightness, turning the screen on/off when you have it up to your ear, etc.

 

[Simo Hero]

Thank you Assassin 'droid Master !!!