Updated to miui 6 and the phone gone to a new level.now more free ram and less heating.for those who are facing less ram.
And battery drain even in standby mode I suggest’task manager’ app from playstore.it has an autokill function when the screen is off to kill background apps and keep more ram free.try it and reply if it helps.
Camera is the best in redmi 1s, no one can beat front camera, I got 3 screen protector with it, started loving my redmi