Asus zenfone 5 comes with android jellybean and upgradable to kitkat.its facilities are 2 gb ram, 1.6 ghz intel atom processor, 8 mp rear camera with pixel master and 2 mp front facing camera.5 inch ips display screen with 720p resolution is an added advantage.2100 mah battery backup is also quite appropriate.it can play hd games without lag.i am using it for more than 1 year.its only disadvantage is heating problem.otherwise it is a good phone to have at an affordable price.customer care of asus is also very effective. So guys you can go for it.