Is there an Android TV app that can access my phone's memory card and stream multimedia from it?

by kuttanpilla

Basically a remote server, but that which uses my phone's card instead of a hard disk.

gabstance

I use the Bubble UPnP app to do this on my Shield and my other Android devices. I also paid the one time license fee of a few $$ to be able to access internal memory and cloud accounts, and to have unlimited file downloads as well. One license covers all of my Android devices. I have been using it for at least 2 years now and have no complaints. It also is handy when I want to transfer small files from one device to another, or switch playback to another device.

Ins0mn3ac

Google Photo can Chromecast all the media files in the phone if that's what you need, as for app, no idea.

luqmanr

if you have a xiaomi device, you can make your phone storage opened up as an ftp