One of the reasons for hoarding old iPhones could be the relatively low prices offered by the "buyback" companies. The Apple approved reuse and recycling programme in the UK offers £27 for a pristine 32GB iPhone 3GS. It's a struggle to buy any new phone with the features of even the old 3GS for £27. Therefore if there's any chance of needing a spare handset, e.g. when travelling, it makes more sense to retain the iPhone than purchase a basic phone at a higher price.
2/12/14 at 10:53pm