diff --git a/app/src/main/java/io/nekohasekai/sfa/bg/ServiceNotification.kt b/app/src/main/java/io/nekohasekai/sfa/bg/ServiceNotification.kt
index 52a236f..7a8b0f0 100644
--- a/app/src/main/java/io/nekohasekai/sfa/bg/ServiceNotification.kt
+++ b/app/src/main/java/io/nekohasekai/sfa/bg/ServiceNotification.kt
@@ -95,7 +95,7 @@ class ServiceNotification(
     }
 
     suspend fun start() {
-        if (Settings.dynamicNotification) {
+        if (Settings.dynamicNotification && checkPermission()) {
             commandClient.connect()
             withContext(Dispatchers.Main) {
                 registerReceiver()
diff --git a/app/src/main/java/io/nekohasekai/sfa/ui/MainActivity.kt b/app/src/main/java/io/nekohasekai/sfa/ui/MainActivity.kt
index 0cfb338..319157f 100644
--- a/app/src/main/java/io/nekohasekai/sfa/ui/MainActivity.kt
+++ b/app/src/main/java/io/nekohasekai/sfa/ui/MainActivity.kt
@@ -221,7 +221,10 @@ class MainActivity : AbstractActivity<ActivityMainBinding>(),
             notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
             return
         }
+        startService0()
+    }
 
+    private fun startService0() {
         lifecycleScope.launch(Dispatchers.IO) {
             if (Settings.rebuildServiceMode()) {
                 reconnect()
@@ -241,10 +244,10 @@ class MainActivity : AbstractActivity<ActivityMainBinding>(),
     private val notificationPermissionLauncher = registerForActivityResult(
         ActivityResultContracts.RequestPermission()
     ) {
-        if (it) {
-            startService()
-        } else {
+        if (Settings.dynamicNotification && !it) {
             onServiceAlert(Alert.RequestNotificationPermission, null)
+        } else {
+            startService0()
         }
     }
 
@@ -304,6 +307,8 @@ class MainActivity : AbstractActivity<ActivityMainBinding>(),
     }
 
     override fun onServiceAlert(type: Alert, message: String?) {
+        serviceStatus.value = Status.Stopped
+
         when (type) {
             Alert.RequestLocationPermission -> {
                 return requestLocationPermission()
@@ -320,7 +325,8 @@ class MainActivity : AbstractActivity<ActivityMainBinding>(),
             }
 
             Alert.RequestNotificationPermission -> {
-                builder.setMessage(getString(R.string.service_error_missing_notification_permission))
+                builder.setTitle(R.string.notification_permission_title)
+                builder.setMessage(R.string.notification_permission_required_description)
             }
 
             Alert.EmptyConfiguration -> {
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 8fe6e38..53f0e16 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -161,4 +161,6 @@
     <string name="location_permission_description"><![CDATA[您的个人资料包含 <strong><tt>wifi_ssid</tt> 或 <tt>wifi_bssid</tt> 路由规则</strong>。为了使它们正常工作，sing-box 在<strong>后台</strong>使用 <strong>位置</strong> 权限来获取有关所连接 Wi-Fi 网络的信息。该信息将<strong>仅用于路由目的</strong>。]]></string>
     <string name="location_permission_background_description"><![CDATA[在 Android 10 及更高版本中，需要<strong>后台位置</strong>权限。选择<strong>始终允许</strong>以授予权限。]]></string>
     <string name="open_settings">打开设置</string>
+    <string name="notification_permission_title">通知权限</string>
+    <string name="notification_permission_required_description">sing-box 无法在没有发送通知权限的情况下显示实时网速。请授予权限或禁用实时网速通知后再启动服务。</string>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 978c460..d8d1db7 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -188,6 +188,6 @@
     <string name="location_permission_description"><![CDATA[Your profile contains <strong><tt>wifi_ssid</tt> or <tt>wifi_bssid</tt> routing rules</strong>. To make them work, sing-box uses the <strong>location</strong> permission <strong>in the background</strong> to get information about the connected Wi-Fi network. The information will be used <strong>for routing purposes only</strong>.]]></string>
     <string name="location_permission_background_description"><![CDATA[On Android 10 and up, <strong>background location</strong> permission is required. Select <strong>Allow all the time</strong> to grant the permission.]]></string>
     <string name="open_settings">Open Settings</string>
-
-
+    <string name="notification_permission_title">Notification permission</string>
+    <string name="notification_permission_required_description">sing-box is unable to show real-time network speeds without the permission to send notifications. Please grant the permission or disable real-time network speeds notification before starting the service.</string>
 </resources>
\ No newline at end of file