The iPhone has always had a robust market for used handsets, with even older models still getting rather good returns for their former owners. Priceonomics has done a study of the used smartphone market and compared the depreciation in resale value for the iPhone versus Android and BlackBerry handsets. Unsurprisingly, the iPhone holds onto its value much better than competing handsets over the same stretch of time. Priceonomics found that after 18 months an iPhone stil
