diff --git a/frontend/mobile-app/lib/core/telemetry/session/session_manager.dart b/frontend/mobile-app/lib/core/telemetry/session/session_manager.dart
index 8b9ecb19..90e6632b 100644
--- a/frontend/mobile-app/lib/core/telemetry/session/session_manager.dart
+++ b/frontend/mobile-app/lib/core/telemetry/session/session_manager.dart
@@ -87,6 +87,10 @@ class SessionManager with WidgetsBindingObserver {
 
     _state = SessionState.foreground;
     _startNewSession();
+
+    // 上传上次被强杀遗留的事件 + 本次 session_start（含设备信息）
+    // Amplitude/Mixpanel 标准做法：回到前台即是下一次上传机会
+    _telemetryService?.flushOnBackground();
   }
 
   /// 处理进入后台