Apple is aware of a glitch in iOS 7 that is disrupting iMessage delivery and is working on a fix, reports The Wall Street Journal. “We are aware of an issue that affects a fraction of a percent of our iMessage users, and we will have a fix available in an upcoming software update,” Apple said in a statement. “In the meantime, we encourage any users having problems to reference our troubleshooting documents or contact AppleCare to help resolve their issue. We apologize for any inconvenience this causes impacted users.”Since the release of iOS 7 last month, users have been complaining about issues relating to the sending and receiving of i