You're absolutely right that free and cheap calls are a very powerful incentive, but it would be even more powerful if those calls could be accessed by just entering a username and password.

Skype works like this on the tablets, it never demands any technical settings whatsoever, so why can't all VOIP services be like Skype?


Well, video and VOIP haven't been on cheaper mainstream phone models bought by ordinary people. It's possible that it wasn't a problem before but it will increasingly become a problem, because even lower end phones are starting to get some kind of video call capability.

It also won't help matters that some phone network operators will do their best to put as many obstacles in the way of VOIP as possible.