Mobile Detect

Mobile_Detect is a lightweight PHP class for detecting mobile devices. It uses the User-Agent string combined with specific HTTP headers to detect the mobile environment.
Usage

Check for a specific platform:

{if $tbmobile->isiOS() } 
  // code to run for the Apple iOS platform. 
{/if} 
 

{if $tbmobile->isAndroidOS() } 
  // code to run for the Google Android platform. 
{/if}

Other case insensitive available methods are isIphone(), isIpad(), isBlackBerry(), isKindle(), isOpera(), etc. For the full list of available methods check the wiki.

Alternatively, if you are only interested in checking to see if the user is using a mobile device, without caring for specific platform:

{if ($tbmobile->isMobile())}
  // any mobile platform
{/if}

{if($tbmobile->isTablet())}
  // any tablet
{/if}