At this years Mobile World Congress, Mozilla is pushing its self-appointed mission to create a truly affordable smartphone with the demonstration of a $25 proof of concept device. Built by chip partner Spreadtrum, it runs the latest version of Firefox OS, but unfortunately does so with considerably more lag than the new generation of handsets introduced by Mozillas partners. These sacrifices may appear justified by the devices rock-bottom price, but they also place a question mark over whether it can really be considered a smartphone. Aimed at the most price-sensitive segment of the smartphone market, this $25 prototype wants to bring the capabilities of web and email access to those who cant afford even Nokias entry-level Asha handsets.