My iPhone says I have one unread message, but doesn't show anything?

It says I have one unread message but when I click on it, it show nothing. Like none of my messages show up. Period. And after I look at a blank screen for a few minutes it just goes back to the home screen.

Try restarting it hold the power button and the home screen down until it turns off, show the apple, and turns back on. If not call your carrier if that doesn't work.

This happens allot to me just turn your phone off for about 1 or 2 minutes then turn it back on it should be fine

If you opened it up on your computer it won't show that it is unopened but it will still say one message unread.

Go to Settings--Mail, Contacts, Calendar---open specific email account-- where it says "Mail" or "Account", switch that to the OFF position.
I then did a hard reset… Hold both buttons. Once the iphone is back and running, go back to the same place and switch it to the ON position.
Works every time

Go to Settings--Mail, Contacts, Calendar---open specific email account-- where it says "Mail" or "Account", switch that to the OFF position.
I then did a hard reset… Hold both buttons. Once the iphone is back and running, go back to the same place and switch it to the ON position.
Works every time

I wonder if they are blocked messages. They come up as a messages but you're unable to read them.