www.chinaphonearena.com

Dear friends please can you guide me how to find which version of galaxy s4 clone do i have.

The only thing i know is that uses mt6589 hardware with android 4.2.2.

Thanks a lot and wish you all the best,
hugs

Go to system settings, scroll all the way to the bottom, it should say "about phone" or something similar.
The about phone menu should state a "model" or "model number".
Google the model and look for the brand with the same model and specs, if you have a match you've probably identified your phone