I am using Oppo F1s from last 6months , best features are
Camera . Picture quality
3gb Ram - which makes it fast
Sound is good
Touch is good
Battery back up
It takes arround 30-40 mins to full charge its battery
My usage is execessive gaming , net browsing and downloads , but till date it is not hangged even once
Only one thing which I miss , is while typing it does not have caps on option , for each and every letter use have to click on the up arrow for a capital letter
I bought it @ 17300 , which is worth it
I stongly recommend to buy . U’ll love it