Tecno shows off a rollable phone prototype, better UTG for foldables and color changing tech

Last year Tecno presented a rollable phone concept called the Phantom Ultimate. This was just a concept, though, seen only in demo videos – but now the company has some actual prototypes and brought them to the MWC. We got some hands-on time with the Ultimate and a couple of other interesting ideas that are brewing over at Tecno HQ…