Global game chat in lobby for mobile

How do we implement global game chat for lobby specifically for android game?

Like in pubg mobile where we connect to our lobby and can access to global game chat where we receive message from 100s of people simultaneously for mobile.

How do we achieve this for android game? Should I make socket connections using backend language like Node js or there is support for this in unreal online subsystem/ Epic online services for android/IOS?

There’s support in EOS for Android and iOS

And there’s a lobby interface implemented: Lobby Sample | Epic Online Services Developer

Aaaand, there’s a voice chat with lobbies section: