There seems to be an ongoing trend of soon-to-be-announced phones showing up on subways (the last one being the Google Pixel 3 XL). This time we see a man holding what looks to be the Huawei Mate 20 Pro while he takes a subway ride. While the front of the device doesn’t really stand out, the rear shows a Twilight-like color with the triple camera system in a square setup. The fingerprint-smudged rear also has what you see a barcode sticker, which usually signifies it’s a prototype or test unit.  

Source: Android Authority