Basically, it is a bit difficult to enable UPnP on Android or via any smartphone. For easily, by choosing the internet provider providing a router along with UPnP integrated into it, you are going to save your life.
You need to enable JavaScript to run this app. 5 of the Best DLNA Streaming Apps for Android Aug 06, 2017 eXport-it UPnP Client/Server v1.6.6 (Paid) | Apk4all.com Jul 02, 2020 UPnP client - YouTube Jan 31, 2013
100% Discount]eXport-it UPnP Client/Server | Giveaways
UPNP (client) not working in Kodi v18.x · Issue #16335 Jul 01, 2019
I figured out partial solution for BeyondPod, a podcast client, and BubbleUPnP, where BubbleUPnP streams to the speaker when it is set as "external" player for BeyondPod. It's a partial solution because it works only for applications with support for redirection to external player.
Maybe VLC UPnP works on Windows, but I don’t use Windows and if I did I’d use the free UPnP client that Microsoft provides. My TV has a DLNA client so I know the server works. The problems with Mac and Linux VLC UPnP are not new, it’s been years since I’ve seen it work, and I …