Why did my icons pics disappear?

[iMore Question]

Why did my icons pics disappear

I still have icons on my main screen but all the icons look like test screen on an old TV set !!! What happened

 

[AgentHeracles]

Re: Why did my icons pics disappear

Do either a reset by turning the phone off and on, or a hard reset by holding down the sleep/wake and home buttons until the apple logo appears. This should fix it.