There are a number of sites you can go to to help with this.
Try Pipl (linked below). Put in different variants of the person's name. Try your search without a city or state and slowly narrow it down.
Pipl.com or zubasearch.com they will give you option of doing a reverse number look up
Go get a phone book or go to www.phonebooks.com
That would be an invasion of their privacy. So I doubt there is such a website.
u go to the menu then you click on the icon that says setting then you go to phone info and click on it then u go to my number and it will tell you
What you can do to find them is go on www.peoplefinder.com and type in their phone number.
Everybody needs their privacy but if you need a friend's number just go ask them. And if you're really that lazy, go find a phone book.
Go under Settings > About phone > Status, and your number should appear there.
go online and find an world wide phone book
yhu go to your settings
you can go online and type in your cell phone number and the will tell you what to do
Go to Google.com and search the person and say phone number (EGSAMPLE what is Jenifer Lopez's number) Hih ( hope I helped )
step for kids only-1st go on succsessmaker 2.type in 2 3rd pick anyone until you find the right one