A horrible plugin. In addition to the unresolved access issues where the developer's solution is to have you give them admin access to your Worpress install (Really? Give them the keys to my blog? WTF?), changing the mobile theme using this plug-in also hosed my blog's desktop theme as well. Good thing I checked my blog right after removing this *ahem* plug-in or I'd have been offline for a while.
Avoid this plug-in until these issues are resolved unless you enjoy frustration and downtime.