I've had the DNA for about 2 weeks now, coming from the Thunderbolt. I use PDANet as my only internet source on VZW (I live in the middle of nowhere yet can luckily get a 4G signal). Seems that when I'm USB tethered, if I get a CDMA call, mobile data turns off. Never happened on the Thunderbolt in over 2 years. As soon as I hang up the call, mobile data comes back on. Am I missing something? Some button somewhere to let these completely different systems work at the same time? If not, this seems to be a major step back in functionality for HTC. I'm now wondering if I'm driving and using Maps and get a call, will Maps stop working since it uses 4G? That would suck! It also appears the 4G antenna on the DNA is nowhere near as robust as the Thunderbolt. If I move the DNA it drops to 3G. Let it sit for a while and it will eventually reacquire 4G. The Rezound 4G antenna is a monster and the Motorola Razr Max smokes the DNA on every SpeedTest run at my kitchen table. Any help will be greatly appreciated as this thing should easily be able to do mobile data and CDMA at the same time.