Apple surpassed LG as the world’s third largest cell phone vendor in the fourth quarter of 2011. This came on the heels of the debut of the iPhone on Sprint in the United States. Apple trails Nokia and Samsung respectively, with Nokia now designing phones exclusively for Windows Phone 7 and Samsung designing phones for Windows Phone and Android. Apple’s achievement of being the world’s largest cell phone vendor, while being the only producer of phones for iOS shows the sheer popularity of the platform, since the other vendors are still releasing an abundance of phones a year for multiple operating systems. Apple’s dominant position in the market shows that iOS is the platform to develop for.