I want to share my personal experience with vivo v7+, my friend have this mobile it has good features.
It’s has big screen 5.99 inches, for gaming, video, photos it’s good to watch but it’s big size.
This mobile I think special made for camera because very clear selfi front facing camera is 24 megapixel with led flash and rear camera has 16megapixel .
This mobile has 4GB RAM 64GB internal memory extend memory slot available it’s you can use . I don’t know of maximum limit he is using128GB extend memory card. And Android Nougat v7.1.2.
I recommend this mobile for selfi camera and gaming.