[Q] Proximity sensor is always "On". Can I calibrate it?
Just got my Galaxy S3 a few days ago and today when I answered a call the screen immediately went blank and I could not turn it back on until the caller hung up. I've had other calls prior to today and cannot recall if the phone behaved the same way. I've been searching for a solution and everything points to a faulty proximity sensor. I've worked around the problem by disabling "Auto screen off during calls" under "Call settings". This works but it's not perfect since if I forget to manually turn off the screen I'm likely to press buttons with my face.
Under *#0*# -> Sensor -> Proximity Sensor: The PROXIMITY always reads 1.0. The ADC field increases as I get closer to the proximity sensor but never drops below 1 (should it?). Are PROXIMITY and ADC both readings from the same sensor?
Under *#7353# -> Proximity Sensor: It always says "Working" and vibrates. From the other tests in this menu I assume this is the "On" state and that the correct behavior would be to not vibrate and display a different message when the sensor is "Off" (ie: nothing is close to the sensor).
Several test apps (Android Sensor Box, Proximity Sensor, Sensor Test) also report 0cm or something similar indicating that something is close to the sensor.
Thanks in advance for any help
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