Yes, definitely it will work there are many people who ask the same question on the internet for all the people who are asking this question you can read out our review of the iRoot app to clear all the doubts.
Kingo root is an excellent piece of high quality software for rooting any phone. But it does not support SC6820 phones like the one this member is asking about. iRoot is the international (English) version of vRoot (in Chinese). However iRoot/vRoot and Kingo all share a lot of similar code.
However if you want to know about rooting your phone via iRoot then this blog is the best place.