iLounge has discovered that an upgrade to iOS 4.1 is necessary for FaceTime chats between fourth-generation iPod touch and iPhone 4 units. Likely due to the fact that FaceTime on the iPod touch uses an email address to connect to Apple’s FaceTime servers, something that isn’t supported in iOS 4.0.2 on the iPhone 4, attempting to connect to an iPhone 4 user running the older software results in failure to connect message. Thus, early adopters…
