I bought the matte black 4 GB / 64 GB variant of xiaomi redmi Note 4 so heres the review:
PROs:
Nice slim design with 2.5 D glass
Outstanding performance ( SD 625 is very efficient and almost 2 GB ram remains free at any instant to accompany the CPU)
Camera is decent at outdoors and front camera is also great. ( root your Note 4 to unlock 4K recording and manuals shutter speed so as to shoot like a pro)
Screen is just amazing. colours pop.
Overall MI UI experience is very decent and friendly.
Tones of customisable features for enthusiasts. ( thanks to m I u i)
Fingerprint sensor does its job like a boss.
No heating issue till writing this review.
Awesome battery backup.( thanks to NM process)
Almost all required sensor in a smartphone are available.
CONs:
Speaker is not up to the mark. its loud but not clear enough.
Camera should be better in some cases.
Fast charging not available.
MI UI prioritise looks over performance just opposite to the oxygen OS I hope update shell bring balance.
Lacks availability due to annoying flash sales.
Reason for 5 stars inspite of having many cons: its price build quality and lack of close competitors at this price. Just go for it you love it