If you are an Apple iPhone or iPad user, you will receive a message on your phone which lets you know that a software update is available. If you have been keeping your device(s) up to date, you will need to install iOS 6.1.3. This is supposed to fix a bug that could allow someone to bypass the passcode and access your phone app.
Be sure to keep your phone “patched” – or – up to date with the latest software updates. We have seen where some applications (including email) will not function properly when updates have not been applied. Instructions on how to update your iPhone or iPad may be found here: http://support.apple.com/kb/ht4623