Hackers have managed to get Xiaomi's MIUI 11 Android skin running on an Apple iPhone SE by utilizing the known checkm8 exploit. A couple of video clips have been shared showing that MIUI 11 had been successfully installed onto the iPhone SE, although it's unclear how well the Apple phone runs on the Xiaomi software.
https://www.notebookcheck.net/Hackers-succeed-in-running-MIUI-11-on-an-iPhone-SE.552114.0.html