I'm kind of shocked to see now replies to this.... Does anyone else use the OK Google feature? Maybe it's just my phone. I think environment changes effect the retrain requirement... If I could only have it remember what I sound like in the car, at home, at work, etc. then it would probably be fine.
The frustrating part is seeing the phone prompt "retrain voice model" after I say "OK Google," rather than just launch the voice search. The trigger always works... It detects what I said.... But doesn't do what I want it to do!