Hide ads or different ads on mobile devices?

I think you have an problem with your ad code. If you use a responsive adsense ad, why you need to show a different ad on mobile? The responsive adsense code that meen, It will change the output to fit in the with window of the screen.

If you whant to control the size, to show special ad sizez on special width screens, this is something else!

Check my solution here on this thread