My sound discontinues to work when I join a lobby in fortnite battle royale,

I play on an and play with cross platform.

Hello,

For Fortnite issues, please visit http://fortnitehelp.epicgames.com/

There you will find various troubleshooting articles as well as an Email Us button that you can use to get in touch with one of our support staff who can assist you further with this.

Thanks