3G iPhone has Second Proximity Sensor

The iPhone 3Gs third sensor has been confirmed as a second proximity sensor, according to an iLounge report.

"While the original iPhone offered only two front-mounted —one ambient light sensor and one proximity sensor—the iPhone 3G sports an array of three sensors (two proximity sensors, one ambient light sensor) in a J shape to the left of the ear speaker, moved from their original locations above and to the speaker’s right."

The third sensor was added to provide improved face proximity detection.


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