Is there a way to silence the start-up notification? It's not too annoying on the D2G, but the R2D2 is really loud and obvious. If you want to turn on your phone unobtrusively it's impossible with these start-up sounds. I've tried searching these forums for the answer, and apologize if it's been answered before. I can put phone on vibrate and silence all other sounds, but still get the start-up sound. Help, please!