G_simranjeet_singh_bhati , via OnePlus 9 Pro , Sep 23, 2021 : I am not happy with my OP9 pro as it has lot of problems. I recently found a problem with my wifi calling. As it was not working. Then I noticed my wallpaper colour has changed a bit. Blue lights were yellow. N lastly no Gmail notifications. So I searched community and nothing helpful was found. I restarted my phone and everything started working perfectly. After 24 hours my wifi calling disappear again. Then wallpaper and after some days Gmail notifications. These things keep happening and after restart everything works fine. I know this may not be hardware issue but i am very unhappy. My OP 5 was much better. Is anybody also facing wifi calling problem?