Flashing green dot next to selfie camera on call

[EkulSmada]

I didn't notice it till now, I'm not sure what it means but there's a small green flashing dot next to my selfie camera when I was on a call. Is it a detector so it knows when to turn the screen off when I put the phone close to my face or do I have some malfunctioning pixels?

[userHOpZpv2Q3k · Accepted solution]

proximity sensor to turn off display during phone calls

[EkulSmada]

thanks