Mobile phone folding technology has come a long way since the humble clamshell design. What used to be a beloved feature has become a major player in the smartphone scene, with tech we couldn’t even dream of back in the day. I’ve only just gotten over the cool dual-screen design that some phones use, and then Samsung revealed its first-ever “TriFold” phone a little while back. And while the company didn’t reveal much about the hardware, it wasn’t shy about showing off its revolutionary three-screen folding design.