I cannot get WPTouch to work with W3 Total Cache. WPTouch admits that there is a known issue with the two, and they send you to a tutorial. The tutorial is out of date, however, and does not work for me. Does anyone have WPTouch working with W3 Total Cache? If so, can you give some directions/instructions?
You'll need to add that long list to Rejected User Agents under Page Cache, Minify and CDN.
If your concerned about the browser caching issues when switching between mobile vs. normal themes, you'll need to add some query string pattern in the reject URIs field on the page cache settings tab.