diff --git a/.idea/deviceManager.xml b/.idea/deviceManager.xml
new file mode 100644
index 0000000..91f9558
--- /dev/null
+++ b/.idea/deviceManager.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DeviceTable">
+    <option name="columnSorters">
+      <list>
+        <ColumnSorterState>
+          <option name="column" value="Name" />
+          <option name="order" value="ASCENDING" />
+        </ColumnSorterState>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 1624f43..44d3834 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -17,6 +17,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.SmartWatchAndroid">
+        <service
+            android:name=".Notification.MyNotificationListener"
+            android:permission="android.permission.BIND_NOTIFICATION_LISTENER_SERVICE"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.service.notification.NotificationListenerService" />
+            </intent-filter>
+        </service>
         <activity
             android:name=".MainActivity"
             android:exported="true"
diff --git a/app/src/main/java/com/example/smart_watch_android/BLE/BleManager.kt b/app/src/main/java/com/example/smart_watch_android/BLE/BleManager.kt
index 6bde287..80adbee 100644
--- a/app/src/main/java/com/example/smart_watch_android/BLE/BleManager.kt
+++ b/app/src/main/java/com/example/smart_watch_android/BLE/BleManager.kt
@@ -9,17 +9,12 @@ import android.bluetooth.BluetoothGattCharacteristic
 import android.bluetooth.BluetoothManager
 import android.bluetooth.BluetoothProfile
 import android.content.Context
-import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import android.util.Log
-import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.annotation.RequiresPermission
-import androidx.compose.ui.platform.LocalContext
 import androidx.core.app.ActivityCompat
-import androidx.core.app.ActivityCompat.startActivityForResult
-import com.example.smart_watch_android.MainViewModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
@@ -139,33 +134,44 @@ object BLEManager{
             Log.d("BLE_DEBUG", "Permission BLUETOOTH_CONNECT error!")
         }
     }
-    fun writeToEsp32(context: Context, dataString: String, SERVICE_UUID: UUID?, CHARACTERISTIC_UUID: UUID?) {
+    fun writeToEsp32(context: Context, dataString: String?, SERVICE_UUID: UUID?, CHARACTERISTIC_UUID: UUID?) {
         val gatt = bluetoothGatt
         if (gatt == null) {
-            Log.d("ESP32_BLE", "error: no GATT-Objekt existing (not connected).")
+            Log.d("ESP32_BLE", "Error: No GATT object existing (not connected).")
+            return
+        }
+
+        if (dataString == null) {
+            Log.d("ESP32_BLE", "Error: Data string is null.")
             return
         }
 
         val service = gatt.getService(SERVICE_UUID)
         if (service == null) {
-            Log.d("ESP32_BLE", "error: Service UUID not found!")
+            Log.d("ESP32_BLE", "Error: Service UUID not found!")
             return
         }
 
         val characteristic = service.getCharacteristic(CHARACTERISTIC_UUID)
         if (characteristic == null) {
-            Log.d("ESP32_BLE", "error: Characteristic UUID not found!")
+            Log.d("ESP32_BLE", "Error: Characteristic UUID not found!")
             return
         }
 
-        val bytes = dataString.toByteArray(Charsets.UTF_8)
-        characteristic.value = bytes
+        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
+            Log.d("ESP32_BLE", "Error: BLUETOOTH_CONNECT permission not granted.")
+            return
+        }
 
-        characteristic.writeType = BluetoothGattCharacteristic.WRITE_TYPE_DEFAULT
+        characteristic.value = dataString.toByteArray(Charsets.UTF_8)
 
-        if (ActivityCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_GRANTED) {
-            val success = gatt.writeCharacteristic(characteristic)
-            Log.d("ESP32_BLE", "started writing: $success")
+        characteristic.writeType = BluetoothGattCharacteristic.WRITE_TYPE_NO_RESPONSE
+
+        val success = gatt.writeCharacteristic(characteristic)
+        if (success) {
+            Log.d("ESP32_BLE", "Successfully started writing: $dataString")
+        } else {
+            Log.d("ESP32_BLE", "Failed to start writing (gatt busy or invalid state).")
         }
     }
     fun syncTime(context: Context) {
@@ -189,7 +195,7 @@ object BLEManager{
 
             writeToEsp32(
                 context = context,
-                dataString ="$formattedDate",
+                dataString = formattedDate,
                 SERVICE_UUID =  deviceUUIDs.SERVICE_UUID,
                 CHARACTERISTIC_UUID = deviceUUIDs.CHAR_DATE_UUID)
         }
diff --git a/app/src/main/java/com/example/smart_watch_android/BLE/DeviceUUIDs.kt b/app/src/main/java/com/example/smart_watch_android/BLE/DeviceUUIDs.kt
index b890ab8..85eeb6e 100644
--- a/app/src/main/java/com/example/smart_watch_android/BLE/DeviceUUIDs.kt
+++ b/app/src/main/java/com/example/smart_watch_android/BLE/DeviceUUIDs.kt
@@ -7,4 +7,7 @@ object DeviceUUIDs {
     val CHAR_MESSAGE_UUID: UUID? = UUID.fromString("3e4eac5b-eaa2-4e0c-a705-dcac4f606e01")
     val CHAR_TIME_UUID:UUID? = UUID.fromString("3e4eac5b-eaa2-4e0c-a705-dcac4f606e02")
     val CHAR_DATE_UUID:UUID? = UUID.fromString("3e4eac5b-eaa2-4e0c-a705-dcac4f606e03")
+    val CHAR_NOTIF_APP_UUID:UUID?  = UUID.fromString("9ff3d4a9-2082-424d-bf34-8dfaf752ff90")
+    val CHAR_NOTIF_TITLE_UUID:UUID? = UUID.fromString("9ff3d4a9-2082-424d-bf34-8dfaf752ff91")
+    val CHAR_NOTIF_TEXT_UUID: UUID? = UUID.fromString("9ff3d4a9-2082-424d-bf34-8dfaf752ff92")
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/smart_watch_android/MainActivity.kt b/app/src/main/java/com/example/smart_watch_android/MainActivity.kt
index 456415c..8784155 100644
--- a/app/src/main/java/com/example/smart_watch_android/MainActivity.kt
+++ b/app/src/main/java/com/example/smart_watch_android/MainActivity.kt
@@ -2,6 +2,8 @@ package com.example.smart_watch_android
 
 import android.Manifest
 import android.bluetooth.BluetoothAdapter
+import android.content.BroadcastReceiver
+import android.content.Context
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
@@ -18,6 +20,8 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.ui.Modifier
 import com.example.smart_watch_android.BLE.BLEManager
+import com.example.smart_watch_android.BLE.DeviceUUIDs
+import com.example.smart_watch_android.Notification.MyNotificationListener
 import com.example.smart_watch_android.Screens.AppNavigation
 
 class MainActivity : ComponentActivity() {
diff --git a/app/src/main/java/com/example/smart_watch_android/Notification/NotificationLisener.kt b/app/src/main/java/com/example/smart_watch_android/Notification/NotificationLisener.kt
new file mode 100644
index 0000000..ed58f3d
--- /dev/null
+++ b/app/src/main/java/com/example/smart_watch_android/Notification/NotificationLisener.kt
@@ -0,0 +1,21 @@
+package com.example.smart_watch_android.Notification
+
+import android.content.Intent
+import android.service.notification.StatusBarNotification
+import android.util.Log
+import android.service.notification.NotificationListenerService
+
+class MyNotificationListener : NotificationListenerService() {
+    override fun onNotificationPosted(sbn: StatusBarNotification?) {
+        super.onNotificationPosted(sbn)
+        val packageName = sbn?.packageName
+        val extras = sbn?.notification?.extras
+        val title = extras?.getString("android.title")
+        val text = extras?.getString("android.text")
+
+        Log.d("NotificationListener", "App: $packageName | Title: $title | Text: $text")
+    }
+    override fun onNotificationRemoved(sbn: StatusBarNotification?) {
+        super.onNotificationRemoved(sbn)
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/smart_watch_android/Screens/AppNavigation.kt b/app/src/main/java/com/example/smart_watch_android/Screens/AppNavigation.kt
index 468da28..407f07b 100644
--- a/app/src/main/java/com/example/smart_watch_android/Screens/AppNavigation.kt
+++ b/app/src/main/java/com/example/smart_watch_android/Screens/AppNavigation.kt
@@ -1,6 +1,8 @@
 package com.example.smart_watch_android.Screens
 
 import android.Manifest
+import android.content.Intent
+import android.provider.Settings
 import androidx.annotation.RequiresPermission
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
@@ -51,6 +53,10 @@ fun AppNavigation(viewModel: MainViewModel) {
                 onDisconnectClicked = {
                     BLEManager.disconnectEsp32(context = context)
                 },
+                onNotificationListnerClicked = {
+                    val intent = Intent(Settings.ACTION_NOTIFICATION_LISTENER_SETTINGS)
+                    context.startActivity(intent)
+                }
             )
         }
     }
diff --git a/app/src/main/java/com/example/smart_watch_android/Screens/ControlPanelScreen.kt b/app/src/main/java/com/example/smart_watch_android/Screens/ControlPanelScreen.kt
index db5081d..af0f805 100644
--- a/app/src/main/java/com/example/smart_watch_android/Screens/ControlPanelScreen.kt
+++ b/app/src/main/java/com/example/smart_watch_android/Screens/ControlPanelScreen.kt
@@ -12,7 +12,6 @@ import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -29,7 +28,8 @@ import com.example.smart_watch_android.MainViewModel
 @Composable
 fun ControlPanelScreen(
     viewModel: MainViewModel,
-    onDisconnectClicked: () -> Unit
+    onDisconnectClicked: () -> Unit,
+    onNotificationListnerClicked: () -> Unit
 ) {
     val context = LocalContext.current
     var textInput by remember { mutableStateOf("") }
@@ -93,5 +93,13 @@ fun ControlPanelScreen(
         ) {
             Text("Disconnect")
         }
+
+        Button(
+            onClick = onNotificationListnerClicked,
+            colors = ButtonDefaults.buttonColors(containerColor = Color(0xFFE53935)),
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text("Notification Listener")
+        }
     }
 }
\ No newline at end of file