diff --git a/frontend/mobile-app/lib/core/services/account_service.dart b/frontend/mobile-app/lib/core/services/account_service.dart
index fbbd4115..550ae34f 100644
--- a/frontend/mobile-app/lib/core/services/account_service.dart
+++ b/frontend/mobile-app/lib/core/services/account_service.dart
@@ -778,9 +778,10 @@ class AccountService {
       value: 'true',
     );
 
-    // 设置遥测服务的用户ID（使用userSerialNum，如D25121400005）
+    // 设置遥测服务的用户ID和访问令牌（用于心跳认证）
     if (TelemetryService().isInitialized) {
       TelemetryService().setUserId(response.userSerialNum);
+      TelemetryService().setAccessToken(response.accessToken);
       debugPrint('$_tag _saveAccountData() - 设置TelemetryService userId: ${response.userSerialNum}');
     }
 
@@ -1166,9 +1167,10 @@ class AccountService {
       value: 'true',
     );
 
-    // 设置遥测服务的用户ID（使用userSerialNum，如D25121400005）
+    // 设置遥测服务的用户ID和访问令牌（用于心跳认证）
     if (TelemetryService().isInitialized) {
       TelemetryService().setUserId(response.userSerialNum);
+      TelemetryService().setAccessToken(response.accessToken);
       debugPrint('$_tag _saveRecoverAccountData() - 设置TelemetryService userId: ${response.userSerialNum}');
     }
 
@@ -1993,9 +1995,10 @@ class AccountService {
       value: 'true',
     );
 
-    // 设置遥测服务的用户ID
+    // 设置遥测服务的用户ID和访问令牌（用于心跳认证）
     if (TelemetryService().isInitialized) {
       TelemetryService().setUserId(response.accountSequence);
+      TelemetryService().setAccessToken(response.accessToken);
       debugPrint('$_tag _savePhoneAuthData() - 设置TelemetryService userId: ${response.accountSequence}');
     }
 
diff --git a/frontend/mobile-app/lib/core/services/multi_account_service.dart b/frontend/mobile-app/lib/core/services/multi_account_service.dart
index c0eada42..ac7eafd6 100644
--- a/frontend/mobile-app/lib/core/services/multi_account_service.dart
+++ b/frontend/mobile-app/lib/core/services/multi_account_service.dart
@@ -289,9 +289,11 @@ class MultiAccountService {
       // 6. 设置当前账号标记
       await setCurrentAccountId(userSerialNum);
 
-      // 7. 更新遥测服务的用户ID
+      // 7. 更新遥测服务的用户ID和访问令牌（_restoreAccountData 已将 token 写入 SecureStorage）
       if (TelemetryService().isInitialized) {
         TelemetryService().setUserId(userSerialNum);
+        final restoredToken = await _secureStorage.read(key: StorageKeys.accessToken);
+        TelemetryService().setAccessToken(restoredToken);
         debugPrint('$_tag switchToAccount() - 设置TelemetryService userId: $userSerialNum');
       }
 
@@ -479,6 +481,7 @@ class MultiAccountService {
       // 清除遥测和 Sentry 用户信息
       if (TelemetryService().isInitialized) {
         TelemetryService().clearUserId();
+        TelemetryService().clearAccessToken();
       }
       if (SentryService().isInitialized) {
         SentryService().clearUser();
diff --git a/frontend/mobile-app/lib/core/telemetry/telemetry_service.dart b/frontend/mobile-app/lib/core/telemetry/telemetry_service.dart
index 419c0a39..4da6a272 100644
--- a/frontend/mobile-app/lib/core/telemetry/telemetry_service.dart
+++ b/frontend/mobile-app/lib/core/telemetry/telemetry_service.dart
@@ -36,6 +36,9 @@ class TelemetryService {
   String? _userId;
   String? get userId => _userId;
 
+  /// 访问令牌（登录后缓存，用于心跳/上传认证头）
+  String? _accessToken;
+
   /// API 基础地址
   late String _apiBaseUrl;
 
@@ -148,13 +151,11 @@ class TelemetryService {
     debugPrint('📊 [Telemetry] Install ID: $_installId');
   }
 
-  /// 获取认证头
+  /// 获取认证头（使用缓存的 access token，由 AccountService 登录时注入）
   Map<String, String> _getAuthHeaders() {
-    // TODO: 从 AuthService 获取 token
-    // final token = AuthService.instance.accessToken;
-    // if (token != null) {
-    //   return {'Authorization': 'Bearer $token'};
-    // }
+    if (_accessToken != null) {
+      return {'Authorization': 'Bearer $_accessToken'};
+    }
     return {};
   }
 
@@ -294,6 +295,17 @@ class TelemetryService {
     debugPrint('📊 [Telemetry] User ID cleared');
   }
 
+  /// 设置访问令牌（登录/切换账号后调用，用于心跳认证）
+  void setAccessToken(String? token) {
+    _accessToken = token;
+    debugPrint('📊 [Telemetry] Access token ${token != null ? 'set' : 'cleared'}');
+  }
+
+  /// 清除访问令牌（退出登录时调用）
+  void clearAccessToken() {
+    _accessToken = null;
+  }
+
   /// 暂停遥测上传（退出登录时调用）
   /// 停止定期上传任务，清空事件队列
   Future<void> pauseForLogout() async {