diff --git a/src/ios/AppDelegate+FirebasePlugin.m b/src/ios/AppDelegate+FirebasePlugin.m
index 7834480f1..a14c65695 100644
--- a/src/ios/AppDelegate+FirebasePlugin.m
+++ b/src/ios/AppDelegate+FirebasePlugin.m
@@ -13,7 +13,6 @@ @interface AppDelegate () <UNUserNotificationCenterDelegate, FIRMessagingDelegat
 @end
 
 #define kApplicationInBackgroundKey @"applicationInBackground"
-#define kDelegateKey @"delegate"
 
 @implementation AppDelegate (FirebasePlugin)
 
@@ -28,14 +27,6 @@ + (AppDelegate*) instance {
 static bool authStateChangeListenerInitialized = false;
 static bool shouldEstablishDirectChannel = false;
 
-- (void)setDelegate:(id)delegate {
-    objc_setAssociatedObject(self, kDelegateKey, delegate, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
-}
-
-- (id)delegate {
-    return objc_getAssociatedObject(self, kDelegateKey);
-}
-
 + (void)load {
     Method original = class_getInstanceMethod(self, @selector(application:didFinishLaunchingWithOptions:));
     Method swizzled = class_getInstanceMethod(self, @selector(application:swizzledDidFinishLaunchingWithOptions:));
@@ -108,10 +99,6 @@ - (BOOL)application:(UIApplication *)application swizzledDidFinishLaunchingWithO
                 [FirebasePlugin.firebasePlugin handlePluginExceptionWithoutContext:exception];
             }
         }];
-        
-        // Set UNUserNotificationCenter delegate
-        self.delegate = [UNUserNotificationCenter currentNotificationCenter].delegate;
-        [UNUserNotificationCenter currentNotificationCenter].delegate = self;
 
         // Set NSNotificationCenter observer
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tokenRefreshNotification:)
@@ -394,14 +381,6 @@ - (void)userNotificationCenter:(UNUserNotificationCenter *)center
          withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler {
     
     @try{
-        if(center == nil){
-            center = [UNUserNotificationCenter currentNotificationCenter];
-        }
-        if(center != nil){
-            [self.delegate userNotificationCenter:center
-            willPresentNotification:notification
-              withCompletionHandler:completionHandler];
-        }
 
         if (![notification.request.trigger isKindOfClass:UNPushNotificationTrigger.class] && ![notification.request.trigger isKindOfClass:UNTimeIntervalNotificationTrigger.class]){
             [FirebasePlugin.firebasePlugin _logError:@"willPresentNotification: aborting as not a supported UNNotificationTrigger"];
@@ -470,14 +449,6 @@ - (void) userNotificationCenter:(UNUserNotificationCenter *)center
           withCompletionHandler:(void (^)(void))completionHandler
 {
     @try{
-        if(center == nil){
-            center = [UNUserNotificationCenter currentNotificationCenter];
-        }
-        if(center != nil){
-            [self.delegate userNotificationCenter:center
-            didReceiveNotificationResponse:response
-                     withCompletionHandler:completionHandler];
-        }
         
         if (![response.notification.request.trigger isKindOfClass:UNPushNotificationTrigger.class] && ![response.notification.request.trigger isKindOfClass:UNTimeIntervalNotificationTrigger.class]){
             [FirebasePlugin.firebasePlugin _logMessage:@"didReceiveNotificationResponse: aborting as not a supported UNNotificationTrigger"];