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Old November 9th, 2011, 08:52 AM   #3 (permalink)
ben_simpson
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Join Date: Aug 2011
Location: Adelaide, SA Australia
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Device(s): Huawei Sonic running 2.3 Gingerbread
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Yeah, it's a proximity sensor used for adjusting the brightness of the screen when in direct sunlight or darkness. It also turns off the display when the phone is next to your ear to save battery.
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