Mi note 4 is a trending mobile which has many features like:
5.5 inches IPS LCD with a resolution of 1080×1920 pixels
3 GB ram 32/64 GB rom sd card slot with 2 sim card slot
Android version 6.
IR remote available
Accelerometer
Bar code reader
Compass
dual tone flash
Vr supports
Curved screen
finger print sensor
three finger swipe screenshot
miui version 8.1.1 stable
colors golden and silver
limited version color black
speaker and microphone
in the box
fast charger
sim pin
front camera 5 mp
back camera 13 mp
and more many features
so its very best to buy