Apple Inc. said Monday it has sold 1 million iPhones in the three days following the release of the latest model on Friday. "IPhone 3G had a stunning opening weekend," said Steve Jobs, Apple's chief executive, in a statement. But the launch was plagued by software problems. All the new iPhones had to connect to Apple's servers for activation, which quickly overloaded them. Lines of customers built in stores as employees were unable to get the phones working. Additionally, new software was released for the old iPhone, which required reactivation of those phones. Many owners of the older phone were left with unusable units. Reports of activation problems subsided over the weekend, as the servers apparently recovered, and buyers were able to activate their phones through their home computers. The iPhone 3G was launched simultaneously in 21 countries, including the U.S. Apple had sold about 6 million units of the first-model iPhone since it launched in the U.S. a year ago. The company has set a goal of selling 10 million iPhones by the end of 2008. Shares of Apple rose $4.83, or 2.8 percent, to $177.57 in morning trading. Apple also said users of the iPhone and iPod touch had downloaded more than 10 million applications from its new App Store since it went online on Thursday. Of the store's 800 applications, a quarter are free. Most of the rest cost less than $10. Programs include news browsers, AOL Instant Messenger software, games and Web radio players.