This phone is good but sometimes it leaves the network from your phone that will create calls dropin and making disturbance while calling.
The bad this about this Vivi phone is customer service there is no emergency help from serving point of view, the parts are not available at time does service point of view is very bad about that services issues.
Cost of this mobile phone is too heavy, under its cost so many options are available in the market so thing about it and make your choice better while taking this Vivo phone.