Thanks for your comment but I can assure you that there is no relationship between our firmware upgrades and the restart issue other than that it might trigger something that could just as well have happened during web browsing, gaming, or some other activity.
I'm still not sure that @master.turbotamil
has the "restart issue". It might be some other reason to why his phone acts this way and that's why I hope he can try a factory reset first.
Some users like @Monark
have reported that you just need to reset your phone and I believe the reason why this worked is because also he does not have the same hardware related restart issue as most others.
So far from the cases we've studied indicate that for those few (yes, I say few because while it may seem as many here on Zentalk
- in relation to global volumes , it is still very few from what we are seeing) unfortunate to get the issue, it would happen eventually anyway (and generally quite early on in the usage) - for those who have been using the phones for a longer period of time without issue - the specific restart problems are very unlikely to be the same root cause.