function DetectMobileQuick()
   {
      if ($this->initCompleted == $this->true ||
          $this->isMobilePhone == $this->true)
         return $this->isMobilePhone;

      //Let's exclude tablets
      if ($this->isTierTablet == $this->true) 
         return $this->false;
      
      //Most mobile browsing is done on smartphones
      if ($this->DetectSmartphone() == $this->true) 
         return $this->true;

      //Catch-all for many mobile devices
      if (stripos($this->useragent, $this->mobile) > -1)
         return $this->true; 

      if ($this->DetectOperaMobile() == $this->true)
         return $this->true;

      //We also look for Kindle devices
      if ($this->DetectKindle() == $this->true ||
         $this->DetectAmazonSilk() == $this->true) 
         return $this->true;

      if (($this->DetectWapWml() == $this->true) 
      		|| ($this->DetectMidpCapable() == $this->true)
			|| ($this->DetectBrewDevice() == $this->true))
         return $this->true;
          
      if ((stripos($this->useragent, $this->engineNetfront) > -1)
			|| (stripos($this->useragent, $this->engineUpBrowser) > -1))
         return $this->true; 
         
      return $this->false; 
   }