Barely a week after Virgin Mobile launched its new Arc, the prepaid carrier is now showing the new TNT! handset on a Beta page on its Web site. Though it is billed as a "dynamite flip phone," the TNT! hardly packs an explosion. In fact, it is as basic a cell phone comes. Inside the simple design you'll find a color display, text messaging, a Web browser, and a speakerphone. The TNT! (is the exclamation point really necessary?) is made by Kyocera and is a variant of the company's Adreno S2400, though with a stripped-down feature set. It will be just $19.99 when it goes on sale in August.