I bought this smartphone six( 6) month ago and I never face any problem with my this smart phone. Many of smartphone create a problem of 'HANG'& 'TOUCH PROBLEM' but my this smartphone 'ASUS ZEFONE 2 550ML' never show this type of problem.
The feature of this smart phone is superb with this smart phone u get
CAMERA-13MP ( Primary) & 5MP ( secondry)
BATTERY-3000MAH( non removeable)
DISPLAY SIZE- 5.5 inch( 720×1280pixels)
DISPLAY TYPE- IPS LCD capacitive touchscreen
MULTITOUCH ALSO APPLICABLE
'ASUS ZEFONE 2ZE550ML' PROVIDE YOU PROTECTION OF CORNING GLASS3
and platform-OS android OS 5.0( lollipop) and u can upgrade this upto V6.0 ( MARSHMALLOW) CPU of this smartphone is also very good of 1.8GHZ QUADCORE, ROM -2GB, INTERNAL MEMORY-16GB,
you can extend it upto 256GB, BROWSER-HTML-5
I REALLY LOVE THIS SMARTPHONE.