I poco x3 pro and starting a while ago (maybe a few months), the incoming call popup is delayed before it appears - the phone started to vibrate for an incoming call, but the popup to answer/decline doesn't appear until just before the fourth vibrate, maybe 4-5 seconds after the call starts ringing. It's also very slow to answer - I press the answer button and it takes 3-4 seconds to display the call, and I've missed more than a few by not being able to answer them more quickly.