Create Chat app like whatts app in android native

You need to use the Socket communication in Xamarin based applications. WhatsApp is, however, more than just a socket based communication provider, it manages elements such as,

Security and authentication
Chat rooms and groups
Multimedia messages
Status streamings
Backups
Network management (bandwidth-based message compression)

And much more... Although all of this is possible with Xamarin, but it would take a lot of development effort in order to build something like WhatsApp, but you can always start right away. Take a look at this blog post to check how socket communication can be done in Xamarin, https://devblogs.microsoft.com/xamarin/developing-real-time-communication-apps-with-websocket/, one of our C# Corner MVPs has already covered the basics of TCP/IP communication using Xamarin here, https://www.c-sharpcorner.com/article/build-real-life-application-using-tcpip-part-one/, and for the part two see this, https://www.c-sharpcorner.com/article/build-real-life-application-using-tcpip-part-two/.

The problem is not that you cannot do it, but rather the problem is that Xamarin might not be a suitable platform for development here. If you only want Android app, and not a cross-platform solution, then you don't need Xamarin, just go for native Android development using Kotlin. But for a cross-platform solution, Xamarin.Forms might be a good choice, since you can share the code on multiple platforms.

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Afzaal Ahmad Zeeshan7y ago
You need to use the Socket communication in Xamarin based applications. WhatsApp is, however, more than just a socket based communication provider, it manages elements such as,
Security and authentication
Chat rooms and groups
Multimedia messages
Status streamings
Backups
Network management (bandwidth-based message compression)
And much more... Although all of this is possible with Xamarin, but it would take a lot of development effort in order to build something like WhatsApp, but you can always start right away. Take a look at this blog post to check how socket communication can be done in Xamarin, https://devblogs.microsoft.com/xamarin/developing-real-time-communication-apps-with-websocket/, one of our C# Corner MVPs has already covered the basics of TCP/IP communication using Xamarin here, https://www.c-sharpcorner.com/article/build-real-life-application-using-tcpip-part-one/, and for the part two see this, https://www.c-sharpcorner.com/article/build-real-life-application-using-tcpip-part-two/.
The problem is not that you cannot do it, but rather the problem is that Xamarin might not be a suitable platform for development here. If you only want Android app, and not a cross-platform solution, then you don't need Xamarin, just go for native Android development using Kotlin. But for a cross-platform solution, Xamarin.Forms might be a good choice, since you can share the code on multiple platforms.