I have a Samsung S20 phone/Android 12, neither this nor my last Samsung will ring or vibrate as a call comes in. I don't have anything set to kill app in background, I have okayed it to always run, sound up, DND off, out of area/unknown numbers NOT blocked, uninstalled/reinstalled MULTIPLE times. All done at least 3 times. Every time my doc calls for a telemed appt if I'm not staring at the screen to see it pop up, I miss the call. Per Google known thing with Samsungs but hasn't been fixed