See my reply in your other discussion thread. The unlocked models aren't compatible with the Verizon Visual Voicemail application. You need to change your account to use the basic non-visual voicemail feature.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
mcskaggs1, thanks for reaching out to us about this. I know how vital voicemail notifications can be. No worries, I have included a link below containing the steps on how to set up your notifications. Let me know if this helps.