Haress.das

Key features include 
1) Mobile Theme “Blue Heart” included 
2) Automatic mobile detection 
3) Images are optimized for mobile view 
4) Make money through integrated ad system. 
5) Optimized for touch screen phones 
6) Mobile users can even leave comments 
7) Mobile users can search for contents.
<h3>Examples</h3>
You can see the mobile theme in action here: http://iammobiled.com from your iphone or any other mobile phone!

IamMobiled Mobile

IamMobiled Mobile Plugin enables your mobile users to see a mobile theme of your website. Comes with a mobile specific theme "Blue Heart"

messense

Wireless WordPress(中文即无线WordPress，也就是WP的wap版的意思),插件自动检测手机访问；支持调整文章内容中的图片的大小以适应手机浏览器，可以选择调整或不调整，并可以自定义图片显示的高度和宽度；支持设置wap版默认主题；自带一款名为wireless的WordPress主题，此主题专为手机版制作，也可以直接作为WordPress普通主题在控制面板启用；支持用户自定义的手机版主题，只需在主题控制面板里面上传主题并在Wireless WordPress插件的设置里面将其设置为默认手机主题即可；支持定义是否允许手机版搜索引擎(Googlebot-Mobile & Yahoo!)收录手机版页面

Wireless-WordPress

Wireless WordPress插件可以为你的博客增加友好的手机版页面

IamMobiled Mobile vs Wireless-WordPress