Originally Posted by cryptie

admin, install this plugin:

Mobile Phone / iPhone / PDA Detection and Style Assignment

it's compatible with 3.7.* you will have styles which will be assigned to different mobile devices.

I then installed the following skins:
iPhone / iPod Touch Optimized Skin by elforro

and

WAP / Pocket PC skin: Mobile Alabama
for regular cellphones.

make sure those styles are set to not be selectable. the device manager will take care of them.

I've used this on a site with 60k registered members.