SEOUL, Korea (AVING) -- <Visual News> Samsung and Cricket, a cell phone provider and wireless carrier, unveils the world's largest working cell phone 'Samsung Messager' in Chicago at Fidelity plaza. And they're about to set the Guinness World Record for the world's largest cell phone. Measuring 15 feet wide by 13 feet tall, it actually works and you can make free phone calls and send free text messages.