It is not the ikee virus which display the photo.

"Following the recent discovery of a worm that changes wallpaper on iPhones, Intego has spotted another piece of malware that attacks iPhones, one that is far more dangerous than the ikee worm. This hacker tool, which Intego identifies as iPhone/Privacy.A, takes advantage of the same vulnerability in the iPhone as the ikee worm, allowing hackers to connect to any jailbroken iPhone or iPod touch (iPhones or iPod touches hacked to allow installation of software other than through iTunes) whose owners have not changed the root password."