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Smartphone
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====Common sensors==== [[Accelerometer]]s and [[gyroscope]]s enable automatic control of screen rotation. Uses by third-party software include [[bubble level]] simulation. An [[ambient light sensor]] allows for automatic screen brightness and contrast adjustment, and an [[RGB sensor]] enables the adaption of screen colour. Many mobile phones are also equipped with a [[barometer]] sensor to measure air pressure, such as Samsung since 2012 with the [[Galaxy S3]], and Apple since 2014 with the [[iPhone 6]]. It allows estimating and detecting changes in altitude. A [[magnetometer]] can act as a [[digital magnetic compass|digital compass]] by measuring [[Earth's magnetic field]].
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