Last time a tried using JQuery Mobile for an Android 4.0.3 HTML5 app, button presses didn't work consistently/correctly and the performance was terrible. Also there is still that whole JQuery dependency thing. Until the Android Webview's robustness increases or JQuery/JQuery Mobile improve support for the Android webview I will stick to my Zepto + MV* Framework + Custom Transitions stack for Android HTML5 development.