Vivo and oppo are the Chinese mobile brands comes under the head of BBK electronics. Tgey have understood the marketing strategies in India and slowly their business has been in expansion for last 2 years.
As a part if visual marketing , they have posted advertisement in every mobile shop possible. Other than that they give retailer 15-16% commission on the sale numbers compared to 5-6% in case of Samsung, Lenovo etc.
Also, they have incorporated cheap quality processors with bulky non-performing RAM.They have also mentioned Mega pixels in a higher numbers. All these stuff is to fool tge customer.
Now, think of the hypothetical situation of a customer who is going to buy Samsung brand smartphone. In the case where the customer is not very particular about the model he wants, the shopkeeper will manipulate him to buy a Vivo smartphone with same budget and extra features.why? Shopkeeper will get more commission in the second case.
Hence, I would suggest not to buy Vivo smartphones as it is the biggest fraud I have ever noticed in Indian smartphone market.