Q: The Mail icon on my iPhone 4s says I have 1,504 unread emails.  I've gone in and cleaned out all my email (sent it to Trash, then emptied the Trash), and when I go to my email, it says no mail.  How do I get rid of this 1,504 emails that aren't there?

The mail icon on my iPhone says I have 1,504 unread messages, but when I go to delete them, it says "No Mail".  I was trying to "clean out" my phone because I can't access my Words With Friends app - everytime I try to go there, it kicks me off.  I still get messages from Words saying my friends are waiting for me.  Any ideas on either of these issues?