What is barometer sensor in phone?

Starting around 2015, device manufacturers started to put barometers in phones, tablets, smart watches, and wearable fitness devices. These tiny, relatively inexpensive sensors measure atmospheric pressure. … This is one of the reasons phones have vents in the bottom – to let air in so the barometer can get a reading.

What is barometric pressure sensor used for?

Barometric pressure sensors are designed to measure changes in atmospheric pressure.