Hello! I have recently purchased an iPhone 4 . It came preloaded with iOS 5.1.1 The phone was working fine until today i saw something weird. I was updating a contact in the phone book and when i change the label to show that the number is home number, it opens a list with many labels such as home, office, iPhone, work etc. But when i scrolled down there were phone number with contact name in the label list. And to my astonishment, i didn't knew a single of them. All i got to know from those number is that i have never called any of them, nor i know the names. Below are some pics . Please suggest some solution.