My Voicemail service isn't prompting callers to leave a message


When I can't pick up my iPhone 5 it rings out for about 30secs and then quits, leaving the caller with the message "this phone is currently unavailable". I've tried resetting my Voicemail password and I've checked that there is still a valid recorded message. Why isn't it playing the message to callers?


In Geostationary Orbit
I would first check with your Cell provider and also maybe reset the voice Mail system.