What is this sensor for?

[Yohnny59]

What is this sensor for?

 

[B. Diddy]

It's a pressure relief vent related to the atmospheric pressure sensor: www.samsung.com/ae/support/mobile-devices/gear-s3-frontier-how-are-the-parts-laid-out-on-the-device/

 

[Yohnny59]

Ok, thanks @B.Diddy ! )