The OnePlus 9 Pro is a high-end smartphone with a 6.7-inch OLED display.It embeds the Snapdragon 888 processor. On its back, there is a quadruple camera module with, in addition to a main sensor and an ultra wide-angle, an x3.3 optical zoom.Cheaper than the OnePlus 9 Pro, the OnePlus 9 is a smartphone with a 6.55-inch OLED screen.I it differs from its big brother by its triple camera module without optical zoom and its slower wireless charging.