A large proportion of iPhone 4S adopters have been hit by an issue on the new device that randomly mutes their audio when they make a call. Their recipient appears to pickup — or the call goes to voicemail — but they do not hear anything.
If you’re one of these users and you’re hoping for a fix in Apple’s upcoming iOS 5.1 software update, then you may be disappointed. According to developers already testing the release, it does not address this particular issue.