I have been using this one since 1-2 months and its working all good. The best thing about this smartphone is camera! a 20 megapixel front camera with moon light flash thats the most attractive and also its specs which makes this smartphone the best in class so far.
Also not to forget the UI interface of vivo I think its better than any other android smartphones.
I have playing huge graphics game on this device and no single hang or delay at all.
loved this smartphone . vivo V5 the best . its worthy buying friends go for it.