[studentjunk]

My phone doesn't do that, and I'm not sure how you are doing it. I now it can be done with gyrator, but that's it.

In any case, it's easy to figure out how it works. Cover make a test call to voicemail or sprint. cover the light sensor for a few seconds (that rectangular box just above the screen left of the sprint word and icon. If that doesn't mute it, then hold the phone upside down in the air. One of the two should mute it.

You can shorten the speed at which both the gsensor and the light sensor with advanced configuration. My gsensor is polling every 200 ms, and light sensor every 1000 ms. My guess, from what you were saying, is that it's the light sensor for the mute call because it's a bit slower.

So if it is the light sensor, then use advanced config to adjust the threshold and/or polling frequency.