VoIP for Nexus One Mobile Phone
Fighting the Contract Model
The current model of smartphone purchases in the US is not at all conducive to new and innovative applications for communication. This is because most people already have a fixed number of minutes every month and using anything else would be a waste unless they're making international calls or have spoken so much that they've already run out of minutes – not a very likely scenario. There are signs that this way of thinking is about to change with T-Mobile coming out with unsubsidized iPhone handsets, but it is clear that carriers still wield a disproportionate amount of power when it comes to the smartphone purchase process.
The one exception to this trend has been Google's Nexus phone lines. Not only are they available directly online without a contract, they also come with the stock Android experience without any skins either by the manufacturer or the carrier. As a result, they are held up to be the benchmark Android phones whenever a new version is released. As such, users of Nexus phones have both the motivation as well as the technical capability to try out VoIP applications. No contracts means that every communications solution has an equal opportunity to be considered. And when viewed on a level playing field, VoIP surges ahead of the traditional PSTN phone system.
Alternatives on the Android Marketplace
It helps that there is no dearth of VoIP clients on the Google Play store. A VoIP client is an app that you install on your smartphone to communicate with the VoIP server. It's very much like an e-mail client in fact as far as its architecture goes. Some of them like CSIPsimple are open source and work with any hosted PBX VoIP provider. Others are tied in to specific services. A few are even paid and have a dedicated following.
But VoIP doesn't always have to mean SIP services though that is what is implied when you're talking about using it from a business perspective. If you're looking at individual users, VoIP also encompasses a huge variety of third-party applications such as Skype and Viber that create their own gated and locked in communities. One may say that this is harmful to the VoIP ecosystem as a whole because it merely creates more barriers to communication. But it certainly does get the idea of Internet-based communications across to people and gets them acclimatized to ditching the PSTN phone system at some future point in time.