I know of course, one thing you can do is recycle – especially the non-smart phones.
But if you’ve renewed a calling plan, and selected a new phone (e.g. go from Android to iPhone or vice versa), what are the best uses of the ‘retired’ phone (the one no longer linked to the network). Should it be retired and recycled or sold on eBay, or are there other good uses you can put it to ? Again – same question for the non-smart phones.