When I got my first cell and I started using that, then my friend send some HD video to my cell when I tried to play it didnt play . I got upset then my friend asked me what happened. then he asked me to use the mx player app .he told me that I would play all the format . I download that and I works everytimes
concept: smart concept came for the videos in my friend appox every one my friend is using this app
layout and design: design are simple and looks good ease to use
feature: many feature given in this once you use you will realize how needful and awesome it is volume control with bightness control with also from swipe and lock feature and you can also add subtitles to the videos .
usefulness: very much useful with HD quality videos