title: Searching the ABAddressBook for the certain phone number
body: <p>I have some problem while searching the address book. I want to search for phone number using addressbook and compare to check if it matches to some other number.</p>
  
  <p>The plain number to which the addressbook data is to be matched is just like this <code>+358473028403</code> but when I retrieve the phone number from addressbook record, it comes in formatted like <code>+358.473.028403</code>. I tried many means of comparing these two string but match always fails. I used this code to filter the characters in the phone number received from the addressbook, but it does not seem to work.</p>
  
  <pre><code>  NSCharacterSet *toExclude = [NSCharacterSet characterSetWithCharactersInString:@"/.()- "];
    phoneNumber = [[phoneNumber componentsSeparatedByCharactersInSet:toExclude] componentsJoinedByString: @""];
  
     BOOL match =  [phoneNumber isEqualToString:@"+358473028403"]
  </code></pre>
  
  <p>match is still <code>NO</code>.</p>