diff --git a/app/build.gradle b/app/build.gradle
index 296dc7eb5..26fdca39d 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -39,7 +39,7 @@ android {
     buildToolsVersion '32.0.0'
     defaultConfig {
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 31
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         // mayor.minor.hotfix.increment (for increment: 01-50=Alpha / 51-89=RC / 90-99=stable)
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index a098c8ff9..92c56df14 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -37,8 +37,11 @@
     <uses-permission
         android:name="android.permission.AUTHENTICATE_ACCOUNTS"
         android:maxSdkVersion="22" />
-    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission
+        android:name="android.permission.BLUETOOTH"
+        android:maxSdkVersion="30" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission
         android:name="android.permission.GET_ACCOUNTS"
@@ -100,6 +103,7 @@
         <activity
             android:name=".activities.MainActivity"
             android:label="@string/nc_app_name"
+            android:exported="true"
             android:windowSoftInputMode="adjustResize">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -122,6 +126,8 @@
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="vnd.android.cursor.item/vnd.com.nextcloud.talk2.chat" />
+                <data android:scheme="content" />
+                <data android:scheme="file" />
             </intent-filter>
         </activity>
 
@@ -176,7 +182,8 @@
             android:name=".messagesearch.MessageSearchActivity"
             android:theme="@style/AppTheme" />
 
-        <receiver android:name=".receivers.PackageReplacedReceiver">
+        <receiver android:name=".receivers.PackageReplacedReceiver"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
             </intent-filter>
@@ -199,7 +206,8 @@
                 android:resource="@xml/contacts" />
         </service>
 
-        <service android:name=".utils.AuthenticatorService">
+        <service android:name=".utils.AuthenticatorService"
+            android:exported="false">
             <intent-filter>
                 <action android:name="android.accounts.AccountAuthenticator" />
             </intent-filter>
diff --git a/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java b/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
index 33a166046..e554d2dd4 100644
--- a/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
+++ b/app/src/main/java/com/nextcloud/talk/activities/CallActivity.java
@@ -161,6 +161,7 @@ import me.zhanghai.android.effortlesspermissions.OpenAppDetailsDialogFragment;
 import okhttp3.Cache;
 import pub.devrel.easypermissions.AfterPermissionGranted;
 
+import static android.app.PendingIntent.FLAG_MUTABLE;
 import static com.nextcloud.talk.webrtc.Globals.JOB_ID;
 import static com.nextcloud.talk.webrtc.Globals.PARTICIPANTS_UPDATE;
 import static com.nextcloud.talk.webrtc.Globals.ROOM_TOKEN;
@@ -2610,7 +2611,7 @@ public class CallActivity extends CallBaseActivity {
                     this,
                     requestCode,
                     new Intent(MICROPHONE_PIP_INTENT_NAME).putExtra(MICROPHONE_PIP_INTENT_EXTRA_ACTION, requestCode),
-                    0);
+                    FLAG_MUTABLE);
 
             actions.add(new RemoteAction(icon, title, title, intent));