I am using VIVO 15 pro from past 4 months and it works absolutely seamless. I am providing few pros and cons of the phone.
Pros:
1) Looks stunning
2) Awesome display
3) Apple like earphones and good music quality
4) Runs all high end games like Pubg without hiccups
5) In Display Fingerprint and FaceUnlock works good and is reliable
6) Signal Reception is better than most of the premium branded phones.
Cons:
1) Light weight, feels delicate, but cover case provided in box gives good protection
2) Amoled Display brightness less compared to other amoled displays especially on Samsung.