Nubia Z20 comes with multiple screens, in addition to a main 6.4-inch AMOLED display, the Z20 also comes with a secondary 5.1-inch AMOLED on its back, which makes this thing a sort of two-faced wizard. While it might be overkill, but having a relatively large display on both sides of the device does have its benefits.

The most important advantage is that by having a screen on the same side as the Z20’s camera module, you don’t need an extra camera “in front” just to take selfies. This also means that the main 6.4-inch display can deliver a true full-screen experience because there’s no need for any notches or punch holes or motorised pop-up cams with questionable durability.

Screens aren’t the only feature the Z20 has in abundance either, as Nubia has included dual side-mounted fingerprint sensors installed on the left and right edges of the device.

read more at https://www.gizmodo.co.uk/2019/10/nubia-z20-first-look-are-two-screens-really-better-than-one/