Vivo y11 is a very good mobile and delivers great performance under regular uses. Camera and sound quality is very good considering the price of the phone.
The ram in this phone is 512 MB and this becomes the lower side for this phone but as the price is low we can not expect more from this phone. There are two sim slots- one for micro and one for regular size sim and that is very good for some users.
I personally think they should have given at least 1 GB ram in this phone and also there is over-heating issues playing some normal games.