The IMX800 is touted to become one of Sony's most cutting-edge image sensors for mobile devices on its launch. Therefore, it might be reasonable to expect it to appear in an upcoming phone such as the Xiaomi 12 Ultra. However, according to a famous leaker, the Honor 70 flagship will beat it to a launch as the world's first phone with this new kind of main camera.
https://www.notebookcheck.net/Sony-s-new-IMX800-camera-sensor-will-debut-in-an-upcoming-Honor-phone.619511.0.html