Just how large do you think the biggest working cell phone in the world will be? Well, it has been unveiled in Chicago, and it measures a gargantuan 15 feet wide and 13 feet tall – definitely not something you are able to tote around and chat with. Currently placed at Fidelity Plaza in downtown Chicago, those who dropped by the unveiling yesterday were able to make free, unlimited phone calls or texts on the gigantic device, although we’d think that text messaging on this will surely take a whole lot longer than placing a phone call. The device relies on service from Cricket and is a working replica of the Samsung Messager, making for a great publicity stunt. Needless to say, you can find this achievement listed in the Guinness Book of World Records, that’s for sure.