Maxaud

This plugin allows you to define different CSS rules that get loaded into the page’s for specific devices.
Includes checks for 18 different tablet options and 13 different phone options.
This can be useful if you need to target specific phones or tablets to make CSS changes or show certain advertisements for certain devices.
For more options or if you feel like donating, check out the <a href="http://codecanyon.net/item/mobile-css-pro/3182318/" title="Mobile CSS Pro" rel="nofollow ugc">PRO version of Mobile CSS</a> that is available for purchase.

Mobile CSS

Allows you to define different CSS styles that get loaded for specific mobile devices.

Unreal Themes

Theme Switch in Mobile and Desktop allows to swap the active theme to another one, when your website is loaded on mobile devices or desktop browsers depending to the device type. With Unreal themes switching plugin, you can select different themes dependent to thedevice, without having to activate the theme previously. “Theme Switch in Mobile and Desktop” will use the correct theme for the conditions where the website was loaded.

Unreal Themes switching

Understanded plugin

"Unreal Themes switching" allows to swap the active theme to another one, when your website is loaded on mobile devices or desktop browsers  …

Mobile CSS vs Unreal Themes switching