For those who want to buy cheaper phones, Intex aqua A4 is a great option for them.
It costs only between 3500-4000( may vary) while it provides 1GB RAM and 8GB ROM.
It also runs on latest android 7.0
It works quite smoothly. However as it is cheap one can not play HD games. If one runs the mobile using no big file then It will run without getting freezed.
Rear camera is average and equivalent of the price. Front camera is certainly not so good. But how much one want in only 3500.
Only problem is battery backup is low. 1750 mah is not enough. It should be 2000 ( or more if possible) .
Overall in my view good phone at cheap price.