I have an ipone 3s and always had a voicemail on it. The voicemail has dissappeard and I cant figure out how to add it back on. When someone calls it rings and rings and then after about 15 rings it says, unavailable, call back later. I dont know how to reset it. i have tried to reset network settings and that didnt work either.
If anyone know how to fix this, it would be great.