The default theme is to work with jQuery Mobile, you can look at they documentation.
This module assumes ANY theme that you want, you do not need to use the default theme at all! Just create your nomal template in cmsms to be ofcorse more mobile style.
I will make tutoriais to for you, soon as possible.
{$startform}
<label for="{$search_actionid}searchinput">{$searchprompt}: </label>
<input data-theme="c" data-type="search" type="text" class="search-input" id="{$search_actionid}searchinput" name="{$search_actionid}searchinput" size="20" maxlength="50" value="" />
<input class="search-button" name="submit" value="" type="submit" />
{if isset($hidden)}{$hidden}{/if}
{$endform}
number_of_levels="1"
or for example
items="home,about,contact-us"
(c) Nuno Costa