Amritam15 , via OnePlus 7T Pro , Aug 2, 2020 : Dear One Plus Team, I'm in beta version of 1+ 7T pro since last one week. Sometimes"Data connection switch during call" not working and Volte call on 2nd sim (Vodafone) automatically turned off. After turn on volte call on 2nd sim "Data connection switch during call" working properly. I think it's a bug of beta version. Please mention that date when you add this important feature "DATA CONNECTION SWITCH DURING CALL" in stable version then I move on stable version due to so much hanging issue and bugs that I feel in beta version. Thanking you.