March 2nd, 2011, 12:34 PM
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#2 (permalink)
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Junior Member
Join Date: Jan 2010
Location: Los Angeles
Posts: 74
Device(s): Galaxy S 4G
Carrier: Not Provided
Thanks: 5
Thanked 3 Times in 2 Posts
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sensor
I believe it's a light and/or proximity sensor. note that when you move the phone from your face, the phone turns the screen back on.
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