Hello friends this mobile is just awesome in its features and very cheaper in price as compare to its features.It has 4gb ram and expandable sd card is 64gb or 128gb. it has 5-8mp primary and 16mp secondary back camera n price is also very low just 13k which is cheaper as price comparision. I used it and its a awesome phone in market. Xiaomi Redmi Note 4 4GB RAM is awesome phone in looks n also in features .its battery capacity is also just awesome