Day in day out, people use Apple's iMessage service to get in touch and sending of messages. It becomes very easy to totally rely on this means of communication if all friends are iPhone users. consequently it can become very frustrating and alarming if one can't get messages sent through iMessage as its the case lately after iOS 7 upgrade. This problem is due to Apple servers having a hard time activation the iMessage service on troubled devices. To fix this, the following workaround have been offered. 1. Go to Settings/Messages and then check if the phone number and Apple ID mail address displayed is actually the right one. 2. Sign out of the Apple ID and then sign in back or sign in with a totally different Apple ID if you have another one. 3. Now, once you are signed in, toggle iMessage OFF and then a few seconds and then toggle ON again. 4. If this still fails to solve the iMessage issue, go to Settings/General/Reset and tap on "Reset Network...
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