diff --git a/ios/App/App/SharedImageUtility.swift b/ios/App/App/SharedImageUtility.swift
index 10d46ba2..42be0aeb 100644
--- a/ios/App/App/SharedImageUtility.swift
+++ b/ios/App/App/SharedImageUtility.swift
@@ -20,7 +20,24 @@ public class SharedImageUtility {
     private static var appGroupContainerURL: URL? {
         return FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupIdentifier)
     }
-    
+
+    private static func logShareDiagnostic(method: String, userDefaults: UserDefaults?) {
+        let shareId = userDefaults?.string(forKey: sharedPhotoShareIdKey)
+        let filePath = userDefaults?.string(forKey: sharedPhotoFilePathKey)
+        let metadataExists = filePath != nil
+        let fileExists: Bool
+        if let filePath = filePath, let containerURL = appGroupContainerURL {
+            let fileURL = containerURL.appendingPathComponent(filePath)
+            fileExists = FileManager.default.fileExists(atPath: fileURL.path)
+        } else {
+            fileExists = false
+        }
+
+        let shareIdLog = shareId ?? "nil"
+        let filePathLog = filePath ?? "nil"
+        print("[ShareTarget] \(method) shareId=\(shareIdLog) sharedPhotoFilePath=\(filePathLog) metadataExists=\(metadataExists) fileExists=\(fileExists)")
+    }
+
     /**
      * Get shared image data from App Group container file
      * All images are stored as files for consistency and to avoid UserDefaults size limits
@@ -29,7 +46,10 @@ public class SharedImageUtility {
      * @returns Dictionary with "base64" and "fileName" keys, or nil if no shared image
      */
     static func getSharedImageData() -> [String: String]? {
-        guard let userDefaults = UserDefaults(suiteName: appGroupIdentifier) else {
+        let userDefaults = UserDefaults(suiteName: appGroupIdentifier)
+        logShareDiagnostic(method: "getSharedImageData", userDefaults: userDefaults)
+
+        guard let userDefaults = userDefaults else {
             return nil
         }
         
@@ -64,7 +84,10 @@ public class SharedImageUtility {
      * @returns true if shared image file exists, false otherwise
      */
     static func hasSharedImage() -> Bool {
-        guard let userDefaults = UserDefaults(suiteName: appGroupIdentifier),
+        let userDefaults = UserDefaults(suiteName: appGroupIdentifier)
+        logShareDiagnostic(method: "hasSharedImage", userDefaults: userDefaults)
+
+        guard let userDefaults = userDefaults,
               let filePath = userDefaults.string(forKey: sharedPhotoFilePathKey),
               let containerURL = appGroupContainerURL else {
             return false