Redmi 3s prime is the wonderful mobile. I did not have any complaints but my Rao Devraj who had also bought it with me has very much of complaints. As his phone is becoming very slow and also hanged down sometimes. As redmi 3s prime had the 32gb internal memory so their is no need to put a memory card but if someone wants to put a memory card he/she did not get successfully putting a card as in redmi 3s prime we can either put two Sims or one Sim one memory card. Other thing that I didn’t like is the not openings of the battery if we want to open the battery while some reason we did not open if these two problem are solved than it is the best smartphone in the 12000 Rs quality.