Some of Apple's various FaceTime-compatible devices made a series of random calls to each other overnight between the 27th and the 28th, according to reports and complaints on Apple's support forums. While the iPhone 4 was predominantly affected, the issue is also said to have hit the fourth-generation iPod touch, and even the Mac beta client. The calls are often described as showing mutual requests, even though no one actually dialed, and in some cases one of the devices was off.