I'm looking forward to iOS 5.1, which should be coming out soon. It's expected to fix some major bugs as well as add some new features. A test version of the new software has been in the hands of developers for months, and the bad news is that it still doesn't address a serious problem with the iPhone 4S. According to many complaints online, and this humongous 114-page thread in Apple's support forum, the iPhone 4S will randomly mute the phone when a person makes a call. The person on the other end appears to answer, but they don't hear anything.