iPhone trade-ins doubled in month leading up to Samsung Galaxy S IV launch March 21, 2013 2:24 PM John Koetsier John Koetsier LinkedIn Twitter Facebook Google Plus Profile Recent Stories: Facebook now has 1M active advertisers Google Glass is Orwellian, ridiculous, and ‘destroys people,’ Noam Chomsky says NSA chief: We do not ‘unilaterally’ obtain data from Google, Facebook, Microsoft servers Are people trading in their iPhones for Samsung's new Galaxy S IV?