When I notice that I have a missed call, I have to manually update my voice mail to check for a voice mail and only after I do it manually will the notification activate. If I don't manually update, I have no way of knowing that there is a voice mail. Any thoughts??
You don't happen to have Visual Voice Mail turned on: (taken from link below)
Went on-line and discovered that I had Basic Visual Voice Mail option vs. Basic Voice Mail option setup. I changed to the Basic Voice Mail option, which also has the Voice Mail Indicator option (the Basic Visual Voice Mail option does NOT).