Redmi 3s is the powered by a chinese brand MI which provide this phone at 2 varients
This phone run on miui 8 and android marshmallow6.0
This phone have snapdragon 430 processor which is good for gamimg and multitasking and also have of 2 gigs of ram which is efficient for gaming
And this phone also provide with 40000 mah battery which is backup to 1 and half day in normal usage nut in heavy usage it gives screen on time of max 6 to 7 hrs
Which is good but not the best
The cons of this phone is the ram managament is very poor so after 7 or 8 months it work slowly as that time
The camera performance of this phone is averagein low light and goid in day light anf selfue camera is average
It is recommended to those users who playing high graphics games and even multitasking