I would say try signing out and signing back in .. Of yur imessage account .
go to settings> Messages/ there you have the option to add or to remove your apps store iTunes account to allow iMessage. Same for face time, but you need to go to settings> phone/ to add your account for FaceTime.Sign in to your iMessage account? Are you supposed to have an account for iMessage, because I don't even see where I would sign in?
go to settings> Messages/ there you have the option to add or to remove your apps store iTunes account to allow iMessage. Same for face time, but you need to go to settings> phone/ to add your account for FaceTime.