This asus phone is very good quality mobile with 5.5" screen. Also this mobile 13MP Camera quality is very good. This 4G phone is a very firstest phone with snapdragon 410 and 615.
Asus zenfone 2 release with 2GB & 3GB RAM. Primary Camera is 13MP camera with Dual-LED(dual tone) Flash and Front camera is 5MP . This phone have four type of sensors, they are Accelerometer, Gyro, Proximity, Compass. Battery is Removable Li-Po 3000 mAh battery.And the display screen is Corning Gorilla Glass 4. OS platform is Android OS, v5.0(Lollipop), and planned to upgrade to v6.0(Marshmallow).
So, Asus Zenfone is a very good firstest mobile .