By asking them.
Phone Book???
look in the phone book!
What you can do to find them is go on www.peoplefinder.com and type in their phone number.
You can't.
Steal their phone >>-------->:O
You can find an 800 phone number directory online at the 800 Notes website. Alternatively, you can find an 800 phone number directory online at the Contact Help website.
call them and ask them where they live
YES
There are a couple of different ways to find a person's new cell phone number from their old cell phone number. One way would just be to ask someone who you know would have that information.
A reverse phone number search is most generally used to find out who an unknown number belongs too. They can also be used to find information about someone whose name and number you know.
Can someone help me find my uncle and as I don't his address but I have his old phone number so I don't know what to do because everything is charging to get some information about him
look it up in the phone book or search it online.