AppleInsider blog revealed rumours that Apple's next mobile operating system iOS 5, won't run on the iPhone 3GS.That would be a change from last year, when iOS 4 was ported to the iPhone 3G, a device that first became available in 2008. While iPhone 3G users were able to upgrade to iOS 4, the software still had missing features due to the slower hardware, like multitasking and background wallpaper.

But iOS 4 on the iPhone 3G had its share of problems. In late July, Apple was compelled to publicly respond after iPhone 3G users reported performance issues with iOS 4.

iOS 4.1, released last September, showed improvements in speed and performance, and they were boosted again in November with the release of iOS 4.2. However, starting with iOS 4.3, iPhone 3G users have not had access to the latest software updates.