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.

Pothi Kalimuthu

Mobile detect plugin uses the open source <a href="http://mobiledetect.net/" rel="nofollow ugc">MobileDetect PHP library</a> to fine-tune the built-in WordPress function <code>wp_is_mobile()</code> in such a way that tablets are excluded from being detected as mobile!
If you don’t understand the above one-liner, here is some explanation…
If we serve different (cached) content for mobiles and desktops, iPads (and other tablets) are usually served with mobile version of the site. That means, iPad users see only the mobile version of the site. If you are in doubt, check your site now! There is nothing wrong with your iPad (or any other tablet). It is due to how WordPress treats iPads and other tablets. Currently, in WordPress, iPads (and other tablets) are considered as mobile! One day (in the future), tablets may be considered as desktops by WordPress internals. Until then, by using / activating this plugin, tablets are served with desktop version of the site.
If your site doesn’t serve different content for mobiles and desktops, please ignore this plugin. This plugin does nothing in that case.
About Mobile Detect PHP Library:
<ul>
<li>Mobile Detect is a lightweight PHP class for detecting mobile devices (including tablets). It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.</li>
<li>PHP Mobile Detect is an open-source script released under <a href="https://github.com/serbanghita/Mobile-Detect/blob/master/LICENSE.txt" rel="nofollow ugc">MIT License</a>.</li>
<li>Mobile Detect PHP Developer: <a href="http://twitter.com/serbanghita" rel="nofollow ugc">Șerban Ghiță</a>, <a href="https://github.com/nicktacular" rel="nofollow ugc">Nick Ilyin</a>.</li>
<li>Original author: <a href="http://twitter.com/victorstanciu" rel="nofollow ugc">Victor Stanciu</a>.</li>
<li>Icon (and banner) created by: <a href="https://twitter.com/grafician" rel="nofollow ugc">Dragoș Gavrilă</a>.</li>
</ul>

Mobile Detect

Fine-tunes wp_is_mobile function by excluding tablets (ex: iPad), from being detected as mobile! Uses MobileDetect PHP Library from mobiledetect.net!

Mobile CSS vs Mobile Detect