Mobile phones have become an indispensable part of our daily life. With the popularity of mobile phones, it has gradually become a social infrastructure, and almost everything needs to use mobile phones. And many people are also attached to it for a moment, becoming the "bow head clan".

As an intelligent device with zero distance contact with people, mobile phone is a powerful traffic window in history from a commercial perspective.

With the development of mobile phones and people's functional needs for mobile phones, there are more and more sensors in mobile phones. Common ones are: light sensor, distance sensor, gyroscope, acceleration sensor, Hall sensor, electronic compass, barometer, GPS.

These devices are like the eyes and nose of mobile phones. Through them, mobile phones can understand what we are doing.

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