Redmi 3s prime is the best quality phone .Because redmi 3s prime is cheif rate.3s prime is the manufacture of MI.MI is the Brand name .That is indian company not chines company .Redmi 3s prime including 3GB RAM and 32GBROM and 1.2GH octa core processor .And this phone features is best quality.And this phone charging quality is the ohsom .And Redmi 3s prime compared other phone is the best I don’t know but know this phone is very good quality .And does not hanging problem compare other phone just And this phone lock features is very best because one times lock again one hour time again break lock option .I like this phone .