If you use popunder from
Plugrush, it works differently on mobile devices, and earnings are higher too.
Mobile redirection is no longer good, and it does not work with search engine sites. You have to decide, what is the best, and use one of the following sites:
Sex Goes Mobile (I think, that they are the best for this)
Bitter Strawberry
First Mobile Cash
VPS Mobile
The best bet, is to try them all, or rotate ads from all these networks, and see, what works best, on your sites.