Asus Zenfone 2 ZE551ML smartphone released in March ,2015 with a screen size of 5.5 inches and a resolution of 1080x1920 pixels. It has a primary camera of 13MP and secondary camera of 5MP .It has features which includes sensor(Accelerometer, gyro, proximity, compass) and also include messaging (SMS(threaded view), MMS, Email, Push Email, IM).It has a Dual-SIM card slot. It is powered by Quad-core 2.3 GHz (4 GB RAM model), Quad-core 1.8 GHz (2 GB RAM model).