By | October 25 2011 9:21 AM

Google and Apple have a tight grip on the smartphone market in the U.S, but starting probably next year, two unlikely companies will be debuting a new challenger to the current leaders. Nokia, known in the U.S. as makers of many different feature phones, and Microsoft will unveil three new devices Wednesday in London. Those phones won't make it to the U.S. until 2012, but they are worth noting because of the Windows Phone operating system that is poised to become the number three choice after Android and Apple's iOS.