title: Convert NSString with a number to appropriate phone number localization format
body: <p>NSString *phoneNumber = @"2310234432";
  I would like to create a new string out of the above but format the phone number according to the current localization. Is there a "native" way I can do this or do I have to write my own methods to return it for every locale ?</p>
  
  <p>Thanx</p>