This list is by no means exhaustive, so make sure to investigate any phone you intend to buy on the used market. Read more: The 5 Best And 5 Worst Samsung Phones Of All Time Red Hydrogen One ...

But if it was an Android phone, it would be a very different story. Why can I get so much for this 3-year-old phone? Right now on eBay a used iPhone 7 goes for around $150 to sometimes over $200.

First, the application. The Octo4a project lets you use an old Android phone as a 3D printer server, web interface, and even time-lapse camera to make those nice movies where the print seems to ...