diff --git a/ios/Classes/InAppWebView.swift b/ios/Classes/InAppWebView.swift
index ffa2686c4..f1e27903f 100755
--- a/ios/Classes/InAppWebView.swift
+++ b/ios/Classes/InAppWebView.swift
@@ -1508,6 +1508,11 @@ public class InAppWebView: WKWebView, UIScrollViewDelegate, WKUIDelegate, WKNavi
 
                 let isForMainFrame = navigationAction.targetFrame?.isMainFrame ?? false
                 let socialLogin = SocialLogin(url: url)
+                if url.host?.contains("udn") == true {
+                    if #available(iOS 9.0, *) {
+                        customUserAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1"
+                    }
+                }
                 if case .google = socialLogin {
                     decisionHandler(.cancel)
                     _ = createSocialLoginWindow(from: webView,