i guess you buy from 1gadget iszit?

screenshot shown your phone using rom base sjrom.cn

many bug app buidin like contact got bug, flash light app cant use, note app cant use..

i know  ..

fake or not just try install cpuz to check cpu info and resolution display same or not like original..

http://forums.hardwarezone.com.sg/android-...os-4621648.html
i guess ur phone is original not fake, just problem is base rom is not official, got many bug..
ur phone already root even new set..
just flash back to original, the problem will solve..
i ask seller help flash back, because i still new about android, dont know how to flash.