what is this on my A5

[samuel462]

The black arrow is pointing to the selfie camera. What does the one pointing to the red arrow do

[Jayman1973]

That is the proximity sensor. When you are on a call it turns the screen off so you don't accidentally dial another number and to also avoid inadvertant touches while holding the phone to your ear. It also reduces display power consumption.

[SnowCat19]

your all wrong, that is a Samsung Robot (bixby) spying on us to make our phones better, this is why Galaxy devices are soo powerful :)

[TBone]

notification LED?

[Wolf1]

SnowCat19 while it may have been in jest, actually wasn't too far off the mark 👍👌 SERIOUSLY!!
It's actually the "ear speaker" so that when you actually have it up to the correct position... 👂