Device type detect

Is user using a mobile device?

//***************************************************
//***************************************************
//********** IS USER USING A MOBILE DEVICE **********
//***************************************************
//***************************************************
function DeviceDetectIsUsersDeviceMobile()
{
  $UserAgent = $_SERVER['HTTP_USER_AGENT'] ?? '';

  //CheckForIOS
  $IsIOS = preg_match('/iPhone|iPad|iPod/i', $UserAgent);

  //CheckForAndroid
  $IsAndroid = preg_match('/Android/i', $UserAgent);

  if($IsIOS || $IsAndroid)
    return True;
  else
    return False;
}