Asus zenfone 2 laser ZE550KL mobile is good & most powerfull battery use in this phone I should lithium ion battery 500mah And support otg cable 13 mp great rear camera 5 mp secondary camera with lots of mode. And display quality is better 1280* 720 ppi with corning gorrilla glass 4 protection companies gives in this mobile mosty one varient in this mobile ram capacity 3gb storage I think 16gb.