Initial known issues for calling native

Author: garchiro7

articles/communication-services/concepts/includes/known-issues-native.md

@@ -0,0 +1,41 @@
+---
+title: Azure Communication Services - known issues
+description: Learn more about Azure Communication Services known issues on Calling SDK
+author: garchiro7
+manager: chpalmer
+services: azure-communication-services
+
+ms.author: jorgarcia
+ms.date: 02/08/2024
+ms.topic: include
+ms.service: azure-communication-services
+---
+
+## Android API emulators
+When utilizing Android API emulators on Android 5.0 (API level 21) and Android 5.1 (API level 22), some crashes are expected.  
+
+## Android Trouter module conflict
+Known issue: When using Android Chat and Calling SDK together in the same application, Chat SDK's real-time notifications feature does not work. You might get a dependency resolving issue.
+
+While we are working on a solution, you can turn off real-time notifications feature by adding the following dependency information in app's build.gradle file and instead poll the GetMessages API to display incoming messages to users.
+ 
+**Java**
+```java
+ implementation ("com.azure.android:azure-communication-chat:1.0.0") {
+     exclude group: 'com.microsoft', module: 'trouter-client-android'
+ }
+ implementation 'com.azure.android:azure-communication-calling:1.0.0'
+ ```
+ 
+Note with above update, if the application tries to touch any of the notification API like `chatAsyncClient.startRealtimeNotifications()` or `chatAsyncClient.addEventHandler()`, there will be a runtime error.
+
+## iOS ongoing video Picture in Picture (PiP)
+
+- Incomming video stops when app goes to background. If the application is in foreground the video renders correctly.
+
+## UI Library
+
+You can follow the known issues wiki page in the GitHub repositories.
+
+- [Android](https://github.com/Azure/communication-ui-library-android/wiki/Known-Issues-Calling)
+- [iOS](https://github.com/Azure/communication-ui-library-ios/wiki/Known-Issues-Calling)