Battery life 0 look Good camera 0 mobile life 1 to 4 yare and hanging problem no problem
The drawback of each Asus Zenfone are vary depend on the spec and prices. Asus Zenfone 4 will have the lowest specification if compare by Asus Zenfone 6, but some users maybe does not like to use 6 inches smartphone because the body size is too big, then we can choose Asus Zenfone 5 with better specification then Asus Zenfone 4.
For camera lover who would like to take more pictures, there is a drawback of Asus Zenfone 4 camera, because this phone does not have light flash to help us take better pictures in low light conditions. However, Asus Zenfone 5 and Asus Zenfone 6 already have build in light flash for the main camera.