Samsung unveiled the Galaxy Fold, a phone that opens into a tablet. See its new features and hefty pricetag. See Also: 6 major challenges foldable phones need to overcome to prove they're not a fad Foldable phones are really, finally, happening this year. But almost nobody should buy one until their many kinks are worked out. Earlier this week, Samsung upstaged its own Galaxy S10 unveiling (all four of them) with another big announcement: its foldable Galaxy Fold phone. The nearly $2,000 luxury device, which transforms from a phone into a tablet when unfolded, is being touted as a taste of the future of mobile. But now that we're days removed from the Galaxy Fold's flashy reveal and merely days away from Mobile World Congress, where a handful of other Chinese phone-makers will show off their own foldable phones, I can't help but see red flags everywhere. In 2017, I made a prediction that foldable phones had no chance of succeeding. At the time, I based m...