A patent filed by Xiaomi has revealed a new rollable phone that is fitted with a retractable display. The user can operate the pull-out screen in the so-called Xiaomi Mi Alpha R to turn the smartphone into a tablet-like device. The patented smartphone borrows heavily from the design of the Mi Mix Alpha but with the addition of a rollable display.
https://www.notebookcheck.net/Xiaomi-Mi-Alpha-R-dual-display-rollable-phone-with-slick-pull-out-screen-appears-in-patent.508711.0.html