diff --git a/packages/firebase_messaging/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m b/packages/firebase_messaging/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m
index b1ea455daaa1..d3b455936acb 100644
--- a/packages/firebase_messaging/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m
+++ b/packages/firebase_messaging/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m
@@ -221,46 +221,22 @@ - (void)application_onDidFinishLaunchingNotification:(nonnull NSNotification *)n
 
   // Set UNUserNotificationCenter but preserve original delegate if necessary.
   if (@available(iOS 10.0, macOS 10.14, *)) {
-    BOOL shouldReplaceDelegate = YES;
     UNUserNotificationCenter *notificationCenter =
         [UNUserNotificationCenter currentNotificationCenter];
 
     if (notificationCenter.delegate != nil) {
-#if !TARGET_OS_OSX
-      // If the App delegate exists and it conforms to UNUserNotificationCenterDelegate then we
-      // don't want to replace it on iOS as the earlier call to `[_registrar
-      // addApplicationDelegate:self];` will automatically delegate calls to this plugin. If we
-      // replace it, it will cause a stack overflow as our original delegate forwarding handler
-      // below causes an infinite loop of forwarding. See
-      // https://github.com/FirebaseExtended/flutterfire/issues/4026.
-      if ([GULApplication sharedApplication].delegate != nil &&
-          [[GULApplication sharedApplication].delegate
-              conformsToProtocol:@protocol(UNUserNotificationCenterDelegate)]) {
-        // Note this one only executes if Firebase swizzling is **enabled**.
-        shouldReplaceDelegate = NO;
-      }
-#endif
-
-      if (shouldReplaceDelegate) {
         _originalNotificationCenterDelegate = notificationCenter.delegate;
         _originalNotificationCenterDelegateRespondsTo.openSettingsForNotification =
             (unsigned int)[_originalNotificationCenterDelegate
                 respondsToSelector:@selector(userNotificationCenter:openSettingsForNotification:)];
-        _originalNotificationCenterDelegateRespondsTo.willPresentNotification =
-            (unsigned int)[_originalNotificationCenterDelegate
-                respondsToSelector:@selector(userNotificationCenter:
-                                            willPresentNotification:withCompletionHandler:)];
         _originalNotificationCenterDelegateRespondsTo.didReceiveNotificationResponse =
             (unsigned int)[_originalNotificationCenterDelegate
                 respondsToSelector:@selector(userNotificationCenter:
                                        didReceiveNotificationResponse:withCompletionHandler:)];
-      }
     }
 
-    if (shouldReplaceDelegate) {
       __strong FLTFirebasePlugin<UNUserNotificationCenterDelegate> *strongSelf = self;
       notificationCenter.delegate = strongSelf;
-    }
   }
 
   // We automatically register for remote notifications as
@@ -1024,4 +1000,4 @@ - (NSDictionary *)NSDictionaryForNSError:(NSError *)error {
   };
 }
 
-@end
+@end
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