As the title suggests, I'm unable to activate iMessage and FaceTime on my iPhone 6. I previously had the iOS 9.1 beta on my phone, but reverted back to the public release of iOS 9. Since downgrading today I've had this problem. I checked Apple's status page and all services appear to be functioning properly and Google searches have come up dry, leading me to believe that this is a problem on my end. Has anybody else experienced this today? I've tried everything from restarting the phone, toggling the on/off button for both FaceTime and iMessage numerous times with absolutely no luck. When I do turn iMessage off then back on I receive an error, which you'll see in an attached photo. I would imagine that if there was a problem with the activation servers, I would have issues with iMessage on my Mac, but I don't. Does anybody know how to fix this?