[w1ntermute]

Well, it's just an issue of network effects now. Within a few years, enough people will have 4G smartphones that we'll be able to rely solely on VOIP-to-VOIP calls.

[seanp2k2]

Until carriers block VoIP traffic, because they can Ben under the FCC net neutrality rules that they keep trying to lawsuit out of existence.

[RobAtticus]

Unless there are big gains in reliability/uptime of IP versus conventional phone systems, I kinda doubt this.