Today according to a blogger @Hey Beta, the prototype of Meizu double screen phone has been leaked online. As image shown, this Meizu phone has a round screen on its back. It uses eight curved design, powered by Exynos 8890 chipset, coming with single rear camera.
It is said the prototype is Meizu Pro X, namely, Meizu M99, but it is pity that it has not been released to sell. Meizu once released double screen phone, Meizu Pro 7, Pro 7 Plus in 2017 as we know. There is a 1.9 inch AMOLED secondary screen on the left back. It has many practical function, such as double camera to take selfie, two fingers for screenshot, weather, pedometer, notification/State remind, sleeping MP3, etc.
As for its specs, Meizu Pro 7 advanced version, and Pro 7 Plus are powered by Helio X30 processor, equipped with RAM 6GB ROM 128GB internal storage, coming with 12MP color+12MP black/white Sony IMX386 rer camera, preinstalling Flyme 6 OS based on Android OS.