Mobile redirection code is no longer good, for xxx sites. It is better to use banner ads, and popunder code. If you use
Plugrush's code, they automatically recognize mobile users, and direct them to a mobile version of their popunder ads.
The best way to monetize mobile traffic, is by far,
Sex Goes Mobile.
Your other choices, include networks like
Bitter Strawberry,
First Mobile Cash, and
VPS Mobile.