I still show unread messages and unheard voice mail notices AFTER I have read and heard them
On my opening screen showing all apps, the symbols for text messages and voice mail still show "some" unread messages and unlistened voice mails despite the fact I have read and in most cases responded to all text and voice messages. The voice mail message notices remain even after I have deleted those messages. I have not yet tried to delete the texts because they contain important information.
Any idea what's happening and how to remedy the situation?