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In this video we're going to learn about the barometric sensors

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A barometric sensor is an instrument used to measure the absolute pressure of a gas

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In iPhone, it is mainly used to make navigation more accurate

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A barometric sensor is a measurement of the pressure of the atmosphere

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For example, in the health function of the iPhone,

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when we climb a building,

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the record will show how many floors we have climbed

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How does it calculate the floors?

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It just uses a barometric sensor

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At different heights, the atmospheric pressure is different

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When you go up one floor,

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the distance is about 3-4 meters

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The pressure in their atmospheres is different,

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and barometric sensors can detect that

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When the barometric sensor is damaged,

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a common failure is the system stalling

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For example, the xs or xs max mainboard often encounters a problem in the actual maintenance,

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that is, the camera will get stuck

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The problem may be caused by a damaged barometric sensor on the tail plug

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In iphones, from the iPhone 6 to the iPhone x,

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the barometric sensor is located in the mainboard

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For models above xs, some of them are in the tail plug cables,

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so we can't see the chip in the mainboard

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The barometric sensor is a rectangle with a hole in the surface

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Now, let's get to know the barometric sensor in the mainboard

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The mainboard is an iPhone 6 mainboard,

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and its barometric sensor is located near the hard drive

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This chip is the barometric sensor

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This is an iPhone 7 mainboard,

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and its air barometric sensor is at the top

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This chip is its barometric sensor

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This is the iPhone 8 mainboard, and it has the barometric sensor on the top

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This chip is the barometric sensor in the iPhone 8

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So that's it for this lesson