After using redmi note 4 64GB 1-2 months.As all knows this is best smart phone in this price segment.Mi became most popular brand in limited period of time in India because of their new features and affordable prices in all price segment.
That’s what look in Mi note 4 16GB, 32GB and 64GB all features are similar but the difference is only RAM and ROM.
You can buy redmi note 4 accordingly to your requirements of RAM and ROM.