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

Remember the PSP Phone? The Sony Walkman phone? A major throwback happens today, as a leak reveals a Sony Xperia XA2 prototype.

From Tamagotchi trinkets to Monobloc chairs, objects can create their own cultural inflection points. Paola Antonelli has a litmus test for worthy design. People often ask the Museum of Modern Art’s ...