Very weird sound - First time i ever hear it

Hi guys!

The sound started playing 2-3 days ago everytime i power my screen on.
The sound in question

Its not the lockscreen, i dont remember to install any new apk.
The issue is also linked with the infrared sensor not working properly. When im calling someone the screen flashes near my ear (the screen is not black)

Do you know whats causing it?

Many thanks!

Galaxy S6 (G920F) Hear sound but nothing on the screen

Hello
My Galaxy S6 screen black on boot but im hear the bootsound.
I tried to install Odin and the Smart Switch, but the problem come on it.
Please help me ( sorry my bad english)

Nexus 7 (2013) Screen is Black. (Can still hear notifications)

My Nexus 7 (2013) screen and charging port have both been replaced professionally. Following the charging port repair, the tablet worked at the store, but later the next day when I went to turn it on, the screen didn't turn on. I thought it was just dead so I put it on the charger. I went to check it the next morning and it still didn't turn on. I've tried all of the reset solutions I could find and the most I've been able to do is get the power/system light to blink five times. It will also occasionally produce notification sounds from various apps and my Google Play account shows that is has recently been online - I just can't see anything! Any ideas on what I should do to further troubleshoot this?