Remember back when Verizon first launched the iPhone 4? AT&T, whose network was struggling at the time, launched a campaign highlighting the fact that AT&T users could talk and browse the web at the same time, and Verizon users couldn't.
Over time, the problem faded into the background. And since Verizon's LTE network — which is now in nearly 400 markets — supports simultaneous voice and data, we didn't think it'd be a problem with the iPhone 5. But apparently, we were wrong...