dialer/lib/features/history/history_page.dart

@@ -375,7 +375,7 @@ class CallDetailsPage extends StatelessWidget {
                 const SizedBox(width: 16),
                 Expanded(
                   child: Text(
-                    contact.displayName,
+                    _obfuscateService.obfuscateData(contact.displayName),
                     style: const TextStyle(color: Colors.white, fontSize: 24),
                   ),
                 ),