I think owner's manual should have this info.Hmm. I can not find that info either. But Vivo Nex model in India is with Snapdragon 845 which is supposed to have (CS43199, SSM6322) as per http://eng.soomal.com/edoc/10100000237.htm
I also want to ask some questions :-
1) Does the os have animation lag when you use the device.
2) Can you see pixels because ppi at 388 is quite poor imo.
3) Can you describe the sound signature of indian model, is it bassy?