Motorola recently unveiled a smartphone that's part walkie-talkie. The Motorola i1 has a push-to-talk function that can by activated by pressing the 3.1-inch touchscreen or a button on the side of the phone. The rugged-looking phone, which has a 5 megapixel camera that can shoot photos or videos, meets military specifications for protection against dust, shock, blowing rain, and vibration. It runs on Google's Android operating system, which means users will have access to thousands of apps in the Android Market. Due out this summer, the phone will run on Nextel's Direct Connect network.