Oppo's latest flagship phone is the Find X7 Ultra. The reason this phone is so popular is because it has two periscope camera lenses on the back. Like most Oppo phones, this phone will arrive in China first, and possibly Europe later, and won't make it to the United States.
The X7 Ultra is all about photography, with four 50MP sensors on the back. Camera #1 on the Periscope is a 3x50MP telephoto lens that uses a 1/1.56-inch Sony IMX890 sensor. Oppo says that "this sensor is approximately three times larger than equivalent cameras on competing flagships and is the largest telephoto sensor on any smartphone." Periscope no. 2 is a 6x telephoto lens with a 1/2.51-inch 50MP Sony IMX858 sensor, so it has a higher zoom but lower image quality. The main camera is a 1-inch high-resolution Sony LYT-900 sensor, and the wide-angle one is a 50-megapixel Sony LYT-600 sensor.