Sprint. Simultaneous voice and data. Two things that, until now, have never gone together. But with the HTC Evo 4G (we've mentioned you can get it June 4 for $199, right?), it's finally a reality, bringing it in line with AT&T and T-Mobile. (If you're wondering what the holdup's been, it's a technical thing.) There is a caveat, however: Simultaneous voice and data only works over 4G and WiFi. So if you're in a 3G-only city, you're out of luck unless you're on WiFi. But it's better than nothing, and it's long overdue, and it's demoed after the break.