During OPPO INNO DAY 2020, OPPO also released OPPO X 2021 Rollable Concept Phone. It’s a futuristic phone design with boundless, rollable screen where you can extend the width from 6.7-inch to 7.4-inch. The roll motor powertrain uses a balanced force technology to expand the flexible OLED screen, so the screen doesn’t fold, it bends […]