The disassembly is the usual process of heating up the phone so that the adhesive holding its glass plate to the frame can loosen and then be pried open with a thin tool.
The Mate 40 Pro is naturally modular inside. We can see the main board, the wireless charging coil, the 4,400mAh battery, the USB-C connector and the cameras.
The main and ultrawide cameras are connected, while the 5x periscope zoom camera has its own independent housing.
The Huawei Mate 40 Pro is reasonably easy to repair, if you have some experience. The battery can be swapped, it’s removed by pulling the pull tab underneath it, the USB-C connector is easily replaceable. Still, in the interest of maintaining your warranty you should go to a professional if you need your phone serviced.