...which are easily removed after disconnecting two additional flex cables. Praise our good old friend the spudger!

The Mate 20 Pro has three rear cameras:

Top right: 40 MP, ƒ/1.8, 27 mm-equivalent wide angle lens

Bottom right: 20 MP, ƒ/2.2, 16 mm-equivalent ultra wide angle lens

Bottom left: 8 MP, ƒ/2.4, 80 mm-equivalent telephoto lens with 5x optical zoom

The P20 Pro's monochromatic camera is ditched for an ultra wide angle lens, ideal for landscape and macro shots (at a minimum focal distance of 2.5 cm).