Please add to the comments if you are experiencing this. I would like to know the OS and device you are using as well.
I’ll bring this feedback to the feature team and help get this investigated.
-WarrenJoe M commented
Hello, ever since I installed iOS 13 beta 2, my teams notifications come in sporadically or not at all. They only seem to work if the app is open on my phone and I have the screen unlocked.
I have my mobile notifications set to always notify me, even if I am active on the desktop, and I changed my notification sound from the default.