Xiaomi 12 cupid is present undertranslation in the battery menu and even when it heats up, it begins to flip through the pages in jerks, as if not 120 hertz but 20 hertz...
Xiaomi 12, when notifications from applications arrive, after a while they disappear from always on display and from the lock screen, but they are in the notification bar when you unlock the phone, and sometimes the labels from the icons disappear
Xiaomi 12X when you take it off the charge, the screen frequency drops from 120hz to 60hz, if not less, and everything starts to twitch, a reboot helps...