iPhone 11 Pro Wifi connection issues

I have purchased a new iPhone 11 Pro Max and it is not connecting to Wifi properly. It shows that it is connected but data is not steaming though. I have restarted the phone, have reset network settings but nothing seems to work. My 3 other older iPhones and iPads are working fine on the same wifi network. I am not happy that this supposedly most advanced iPhone doesn’t connect to Wifi properly.