While startups across the world are doing their best to disrupt mobile networks with clever voice call apps, like Viber (http://viber.com), there remains the basic issues of actual voice and data access which still requires some chipping away at. It's a particular issue in places like Europe where you can drive for only a couple of hours and cross two or even three borders and see your mobile roaming bill spin up or down like a yo-yo. For the past few years we've seen players like Truphone (http://truphone.com) and Maxroam (http://maxroam.com) attempt to gnaw away at the telcos, but now Maxroam is going one further, launching a virtual network operator of its own.
TechCrunch