https://www.techradar.com/news/oneplus-7-pro-features-are-being-brought-to-older-oneplus-phones-by-fans > When the OnePlus 7 Pro launched it brought with it some novel new features such as a pop-up selfie camera and 90Hz refresh rate, which we haven’t seen in many phones before. > It also included some unusual software, most notably screen recording and Zen Mode, and it looks like older OnePlus phones could be seeing these features early.