New research has found that the iPhone is the most popular mobile on the Holiday wish lists of 13 to 25-year-olds in the U.S. Peanut Labs surveyed 1175 “Gen-Y” consumers, 34 percent of whom say they plan to spend more than $300 on consumer electronics purchases this Holiday season. The partFoundry has revealed that it is developing an external GPS dongle for the iPhone. The locoGPS will connect to the iPhone via Dock Connector and will…