17daulatThanks for the information. Yes I was thinking of visiting the service center but I kind of feel the issue that I am facing might be a more of a software bug as it is not happening when I am using SIM2 (Vodafone). Only happens with SIM1 (JIO) Flash SMS.
My friend had a similar issue of phone reboot on a call or after it on his Asus zenfone max m2, diagnostic at a local services centre showed that it had antenna issue. Go to a local service centre and get your device checked