updated 10:50 am EST, Fri November 12, 2010
Initially promised for all devices
AirPlay support is missing on iPhone 3Gs running the iOS 4.2 gold master, a report notes. The option is supposed to appear in playback menus on iPhones, iPods and iPads, and let users push audio or video content to another compatible device, namely the Apple TV. Apple's own website states that the technology should work with "all iOS 4 devices," including the iPhone 3G.
Developer sources and earlier versions of iOS 4.2 are said to confirm that AirPlay was working on the 3G at one point. Why Apple would change its mind is unknown, but Apple may have come to the conclusion that the feature would not run well enough on the 3G's slower processor and small amount of RAM. Performance is why neither the 3G nor the second-generation iPod touch support homescreen wallpapers.
The 3G has long had performance problems with iOS 4, rendering devices upgraded from v3.x difficult to use. One lawsuit is even accusing Apple of deliberately crippling the phone to push people to new hardware. iOS 4.2 is, however, reported to make the device much more usable.