Apple's iOS 7.1 brings iPhone 4 speed enhancements ... 2014年3月10日 - When Apple launched iOS 7 in September, users of legacy handsets like the iPhone 4 experienced sluggish performance as the old hardware ...
iOS 7.1 Improves Performance for iPhone 4 Users - Mac ... 2014年3月10日 - Last September, when Apple released iOS 7 to the public, the iPhone 4 was the oldest model supported by the operating system. However ...
