Could anyone describe what this feature does? From what I can tell it is a random dimmer, it seems to change regardless of what I am doing or the intensity of the ambient light.
It senses light through the sensor located with the alert led. If it senses more light, say you point the sensor directly at a light bulb, then it makes the screen brighter to compensate for the light increase. You will notice it the most in bright sun light. If it seems to do it randomly, pay attention to what bulbs are behind you when it does it. I bet it's just sensing more light.
Posted from my CrackBerry at wapforums.crackberry.com