DON'T BUY FROM ALIEXPRESS.
They are cheaters. I ordered a mtk6592 octacore smartphone and when I got it I rooted it. It was really a mtk6582 quadcore. The seller don't even answers to my messages. Noone protects us from the cheaters. It was my fault to trust them. The store I bought the phone is Soar electronic co., LTD Store No. *******