I was having this issue too, so I looked and noticed I had Sprint VVM still installed and not from a backup. I opened it and it said I had a new voicemail that couldn't be downloaded. I held the back button to kill the app, ???, profit!, vm notification is now gone...
Sent from my SPH-D700 using xda premium
Have you tried turning it off and on again? Is it definitely plugged in?
How is it that your phone is made by Google (a search engine) and yet you can't search before you post??? #truestory
Samsung Galaxy S3 (SGH-i747)
Currently running: latest CM10.1 nightly (I admit I'm a flashaholic)
Asus Transformer TF300T
Currently running: stock JB (no really)