Tonite, my iPhone has suddenly started giving me the message that it cannot retrieve email because the password or username is incorrect. I have rechecked everything and re-entered my password in the mail settings. What is interesting is that I did not make any changes or edits to the settings to begin with and no one else has had any access to my iPhone. I tried rebooting and that did not help either. Anyone have any ideas? I am not the best at setting up email accounts, but don't get what is going on since I didn't make any changes to start with. I logged into my email account on my computer using my usual username and password without any difficulty. I am so frustrated that I cannot figure this out! All help appreciated!