So far, my Google experience has been less than stellar. Small issues since powering the device on and other nonsense since the 4.02 upgrade. Spent 30 min with VZW CS this AM, only to be told that it is due to 4G network issues. I doubt that the LED is a 4G function. Regardless, I've tried Light Flow and it works in the test feature, but otherwise, it's useless...no notification lights at all for missed calls, SMS/MMS or email..etc. On stock vanilla ICS...what does the LED do? Functions? Does it light on charging?