title: iOS: Fetching CNContact Using Identifier?
body: <p>I'm having trouble refetching a <code>CNContact</code> using an identifier. Early on I enumerate through all contacts and do something with the phone Numbers, while storing the identifiers in an array.</p>
  
  <p>Later on I'd like to fetch a specific contact using one of the stored identifiers using the following (where <code>currentIdentifier</code> is the identifier I stored earlier):</p>
  
  <pre><code>CNContact *currentContact = [[CNContact alloc] init];
  currentContact = [self.contactStore unifiedContactWithIdentifier:currentIdentifier keysToFetch:@[[CNContactFormatter descriptorForRequiredKeysForStyle:CNContactFormatterStyleFullName]] error:&amp;error];
  </code></pre>
  
  <p>However, I keep getting <code>NULL</code> when I log it.</p>