Xiaomi redmi 4 black is just love for me because of its feel which has made me crazy.
I cannot say anything about other variants but is black one is awesome.
Its ram is 2 GB which is pretty good and 16gb internal storage.
The phone lags sometime but this can happen with any phone no matter whatever may be its ram.
The phone has good design and its outer edges are curved which increases its beauty to next level.
The has a dual sim slot and one of its slot could also be use to have a sd card in it.
It has a snapdragon processor .
Its camera is moderate and is best for such a budget king worth rs 6999.
Beleve me for rs 6999 u cannot get better than this.