I bought redmi 3s prime for my sister.she had used this for 3 years and still using, no complaints arise until now.Best phone I ever seen.Its awesome mobile within our budget.It is advantaged with best battery life 4100mAH accompany with fast charging.It is dual sim(micro and nano) and support 4G and 3G, specified with fingerprint sensor.Awesome camera(13MP rear and 5MP front camera) and as my sister is a photography lover, capture pictures through this and many of them get published in photography pages.It had capacity of 3GB RAM and 32GB internal storage.