Vivo made a splash at CES 2018 with its in-display fingerprint sensor, the first operational version on a production-ready phone we’d seen, and it’s back at Mobile World Congress with the Vivo Apex — a concept phone featuring technology we could see on future devices from the company. We should stress that the Apex isn’t about to hit shelves, so if you like what you see and want to go and buy one, it’s not possible.
