Redmi note 4 comes in 3 variants( 2GB/3GB/4GB) and 3 colors( gold/dark grey/black) . All in all the phone is excellent. It is big on performance and battery and that all at a comparatively low price. It is powered by sanpdragon 625 which is powerful and at the same time requires less energy to work therby helps the batter last long. The battery is 4100 which is enough to get you through the day.
The phone is dual sim but you have to trade the second sim slot if you want to stick a memory card. The 2GB version is not recommended as the miui is resource hungry and the phone would start lagging soon. The camera is a decent performer but better than redmi note 3. As for the colors, the black color gives the phone a classy look but catches smudges easily but still a good trade off.
The phone heats up when playing high graphics game or using multiple application while charging. I would definitely recommend this phone and you will never regret buying it.