Hi guys, I'm having problems with iMessaging on my iPhone. I updated to iOS7 on Wednesday and everything was fine. But yesterday my iMessaging stopped working after I changed my Apple ID password. Now my iPhone is saying 'Waiting for activation...' when I try and switch iMessaging back on and I keep getting a text message from +44 7786 205094 full of random characters. Anyone else having a similar problem and managed to fix the issue? I've tried restoring, setting up as a new phone, all sorts but it just won't come back on. Thanks, Richard.