G_abhishek_thakur_JXmS , via OnePlus 9 , Sep 23, 2021 : I switched to One Plus 9 from OnePlus 5. Now my phone app doesn't work. Mostly, my phone keeps ringing for 5-10 seconds before I could know who is calling because there is no notification. In some cases the call disconnects and then I have to check the history to know the details. I don't know if someone else is facing the same but this bug is so frustrating. Please guide.