From first-gen portable phones to music streamers and PCs, here's a list of gadgets that gained value since discontinuation.

Your old cell phones could be worth a good amount of money, especially if they were part of a groundbreaking generation or are rare.

Some of these phones, which were once highly expensive, are now being sold for even more on the resale market. The Motorola DynaTAC 8000: A Piece of Mobile History Let’s kick things off with a true ...