Truphone, makers of VoIP solutions for Nokia handsets, today demonstrated the ability to make a call from the iPhone using only the built-in WiFi connection, and without performing a SIM unlock. By executing commands through the terminal — which requires a “jailbreak” of the phone — the company was able to initiate the call from the iPhone, through a WiFi connection, over the internet to Truphone’s servers, then back through the same WiFi system to the receiving handset. “…Our aim is to see Truphone available on all cellular phones with the inherent functionality needed to make VoIP calls. The Apple iPhone is such a phone and we’re pleased to be able to show it working for real,” said James Tagg, Truphone’s CEO. The software is still in beta according to the company, but it hopes to soon have a simplified version that allows for seamless switching between WiFi and SIM use.