It is fake or not

I bought phone from dhgate , I got packaging with no seal, sticker on box version is not match with phone , no plastic bag of usb cable and adaptor
phone quiet slow ,camera crash, lag , have dead pixel on screen, sometime it's reboot by itself,

I try to install upate multilang but can't, I can use Vroot for root it done, but I can't boot in CWM mode with uncleboot
can't install any update

I download aututu and test it, I got 24074 score and information is correct.

Can you please tell me,...

It is fake or not