I bought a cheap phone last year branded YXTEL model G7, yet it was a royal pain to find the way to root it. So you don’t need to suffer the same since this smartphone is actually an MT6582, which is supported by King Root.
Further instructions on how to root your device here: http://www.thehackingguide.com/2014/09/how-to-root-android-phone-without-pc.html
In case you brick your phone, you will need to flash the original ROM, available here: https://docs.google.com/uc?id=0B389hU-zA3kNczlWMkdxbllXeEk
That is it :)