high but not so useful on mobile,maybe tablet need more than 4gb or even 2x3gb ram would be better...
maybe note 4 with 4gb ram can open more than 5 apps at once 
camera nice due to software nice calculation and software adjust,
i think some website already do a review comparing M8,note 4,zenfone 2 camera.
Yes zenfone 2 capture brighter photo compared to other 2,
but if compare on noise performance and sharpness still not that good.
And the low light mode will shrunk the 13mp became 3mp,like what pureview + ultrapixel did back there.

haha..my bad...i was confused with oppo packaging....so nobody here face the charger adapter problem? i think maybe it is cause by the defects in batches of the phone.....