Galaxy S5 draws rush of trade-ins from Samsung phone owners; iPhone users uninterested New flagship smartphone launches are often accompanied by a rush of users trading in older phone models as they upgrade, and data surrounding which models saw increased trade-in volumes can give us a good idea of where business is coming from as*people purchase new phones. If data provided to BGR by Gazelle is any indication, early*Galaxy S5 buyers were*already Samsung device owners in large part, with a comparably small amount of new business coming over from the iPhone.