Photos: Modu named world's lightest phone Summary: The modular Modu phone has been named the world's lightest pone by the Guinness World Record. By Andy Smith | March 25, 2008 -- 13:15 GMT (06:15 PDT) Previous | Next Image 6 of 8 This concept sees the Modu inserted into a sat-nav, which can still make calls. Topics: Mobility, Smartphones Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.