This Wordpress plugin will serve a different theme to selected browsers. You can pick the theme as well as one or more strings which will identify the browser. If any one of these strings is contained in the HTTP user agent string provided by the visiting browser, the selected theme is used instead of your current default theme. For example, if you want to use the “iPhonsta” theme whenever someone with an iPhone, iPod, or iPad visits your website, this is what you enter:
Copy the plugin file (see below) into your Wordpress plugin directory (typically
/wp-content/plugins). Activate the plugin. Adjust your settings in the “Browser-Based Themes Config” menu.