Recently, Huawei patents smartphones with dual-display design. There are still some differences between the previous dual-display phone, Nubia X and Vivo NEX. Firstly, the screen behind is 3 inches small, which occupies half of the phone body. It is mainly used for previewing photos and messages. Besides, there is a front camera equipped, which is known as TOF camera.
It has a triple rear camera, 3.5mm audio jack and USB Type-C connectivity. It is predicted this design will be used in Huawei Mate 30 Series.