Did anyone out there purchase the Rocketfish car charger from BB when they pickd up their phone? I am wondering now if this charger has enough juice to charge the phone while the phone is being used. The wall charger that comes with the phone is 1 amp at 5V, while the Rocketfish car charger is 600 mA at 5V. I am kinda wondering if the car charger will supply enough current to charge the phone if it is being used. Has anyone given it a try?