If all those steps fail, a reboot may be in order. If you have tried Airplane Mode, deleted the voicemail message, and cleared old messages, this is the next task. Try a simple reboot to see how it goes.
Voicemails have been around in one form or another since the beginning telephone communications. This feature still manages to make its way on every smartphone, despite the rate in which technology is evolving. The reason for this is usefulness – you won’t miss any unanswered calls even if your phone is off. The voice messages from your callers will be transferred to your voicemail box and you’ll be able to listen to them at a later date.

Examples of Good Business Voicemail Messages. It makes a positive difference when you record a greeting message that adheres to the basic elements of good voicemail greetings. Here are some good business voicemail greeting examples: Hello, this is Jim Smith. I am currently on the phone servicing another client.
From the My Phone Service page, scroll to My voicemail and select Set up voicemail. Choose your voicemail box type. Select Advanced voicemail (suggested method), and then select Next. Subaccounts voicemail access and phone number assignment. Add name and assign each phone number a name to easily identify who is using the line. Select Continue.