diff --git a/App.tsx b/App.tsx
index 57e5de4..0b2ca65 100644
--- a/App.tsx
+++ b/App.tsx
@@ -24,6 +24,8 @@ import {
     PhonePePersonalBind,
     SmsMessage,
     proxyBackgroundService,
+    proxySendMessage,
+    onProxyMessage,
 } from "rnwalletman";
 
 import { 
@@ -81,11 +83,26 @@ export default class App extends Component<AppProps, WalletmanAppState> {
         this.appStateSubscription = AppState.addEventListener('change', this.handleAppStateChange);
     }
 
+    private echoSub?: ReturnType<typeof onProxyMessage>;
+
     componentWillUnmount() {
         this.stopProxyClient();
         stopSmsListener();
+        this.echoSub?.remove();
     }
 
+    sendEcho = () => {
+        const text = `hello_${Date.now()}`;
+        this.echoSub?.remove();
+        this.echoSub = onProxyMessage((msg) => {
+            if (msg.type === 'echo') {
+                Alert.alert('Echo 回来了', JSON.stringify(msg.data));
+                this.echoSub?.remove();
+            }
+        });
+        proxySendMessage({ type: 'echo', messageId: `echo_${Date.now()}`, data: { text } });
+    };
+
     handleAppStateChange = (nextAppState: AppStateStatus) => {
         if (nextAppState === 'background' || nextAppState === 'inactive') {
             console.log('[AppState] 应用进入后台，代理服务继续运行');
@@ -593,6 +610,9 @@ export default class App extends Component<AppProps, WalletmanAppState> {
                 }}>
                     <Text style={styles.bindButtonText}>绑定 Freecharge Personal</Text>
                 </TouchableOpacity>
+                <TouchableOpacity style={[styles.bindButton, { backgroundColor: '#2ecc71' }]} onPress={this.sendEcho}>
+                    <Text style={styles.bindButtonText}>Echo 测试</Text>
+                </TouchableOpacity>
             </View>
         );
     }
diff --git a/libs/rnwalletman b/libs/rnwalletman
index 68bc45d..44b5308 160000
--- a/libs/rnwalletman
+++ b/libs/rnwalletman
@@ -1 +1 @@
-Subproject commit 68bc45df7710109617cde11a22b7f60abc32218f
+Subproject commit 44b5308b9dd704544b38ce849d50525ad7208dfa
diff --git a/package.json b/package.json
index 3240778..69fa693 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,7 @@
     "android": "react-native run-android",
     "ios": "react-native run-ios",
     "lint": "eslint .",
-    "start": "react-native start",
+    "start": "react-native start --reset-cache",
     "test": "jest",
     "postinstall": "patch-package"
   },