Hello friend
My experience with redmi note 4(4GB RAM, 64GB Internal).
In this phone sound is best and very loud
And Its design is very good you feel your phone in your hand.
In this phone battery is 4100 MAH Im using 2 day with out charging Its backup for 2 days
In this phone we got a 13 MP back camera and 5 MP front camera Images quality is very good in other phone in this price.
Lets talk about performance is great In this phone we get a Snapdragon 625 processor and operating system is Android OS v 6.0(marshmallow).
In this phone my opinion is the best phone in this price rang 11, 000 IND.
And Im very happy to buy mi note 4.
Thank you so much