I have WPTouch installed (free version, most recent), and on an Android mobile phone (Motorola), it only shows the "Home" button, and pressing it does nothing.
I have the plugin setup to show a lot of buttons, some custom. I've set up W3Total Cache the way many posts on the subject say to do.
In W3Total Cache, User Agent Groups, I have Android in the "High" group, and Theme is set to "pass through". I also have it listed in the "Rejected User Agents" in the Page Cache and Minify sections. Is this correct?