Asus is known for its hardware specification mostly .and also its 1st phone which was launched earlier is comes with 2gb ram now this phone is xomes with 4gb of ram but it still hanging .because the combination of software and hardware is not to good friendss. its software have so many bugs and asus always promises to overcome their bugs but they dont it camera is average as compare to other phones I am using this phone it totally wastage of money.