Dell, the world's third-largest computer maker, was announcing the deal on Wednesday before the official opening of the International Consumer Electronics Show in Las Vegas.
Dell has already built versions of the phone, known as the Mini 3, for wireless carriers in China and Brazil. The price and release date for the U.S. model have yet to be disclosed.
Dell also plans to use CES to show off devices that are bigger than a smart phone but smaller than the average netbook, including a tablet-style computer. None will be available immediately.