Redmi 3s prime is a mid range phone with extraordinary features.
It has huge battery, metal unibody, more storage, good performance, etc.
Plus points:
~Latest Miui 8 and android Marshmallow.
~Octacore processor gives smooth performance.
~3 GB RAM is more for apps installation.
~32 GB of internal is an full of storage.
~Many sensors like IR plaster and fingerprint sensor give more attractions.
~Huge Battery of 4100 mAh .
Minus points:
~ Poor camera quality
~Hybrid sim tray which is quite discomfort.
~poor sonud.
Overall it is an excellent phone.