How to find the phone number?

How do I find the phone number to a Nokia phone?

• I'm taking a trip to China, so my friend (who used to live there for a year) let me borrow her cell phone that she bought in Beijing. Only problem is, she forgot the phone number to it. I know that most phones (or at least the ones i've used) will have an option you can go to where it will tell you the phone number that belongs to that phone. I tried to find it on the phone but couldn't. Does anyone know where I can look and what buttons to press? It's a Nokia phone. I believe it's a prepaid phone. It's this one: http://www.nokiausa.com/find-products/phones/nokia-5310-xpressmusic

• Answer:

  Phone up the cell company and they will issue you with the number. Or do a background report search using your friends name, this will give the cell phone number.