Hello frnds my name is tushar.Xiaomi Redmi 4 64GB internal backup good. Launch 5/16/2017 weight 150g fingerprint lock sensor 5.0inch camera 13mg front 5mp very good is the best mobile that. I used 1year the function is excellant I really like its specially camera clearty good battery 4100mhp power I buyer online its is not coast but the delivery is taking to few day its is very very good mobile enjoy thankyou frnds