It added the ability to post comments while a video was playing, mimicking the desktop site’s functionality.
This is the original pre-material design version with the old 3D icon, no Shorts, no ads before every video, and a much simpler player. youtube version 2.1.6 apk
: If signed into a Google account, users received a dedicated subscription update feed right on the app's home screen, making it easier to track new content. It added the ability to post comments while
I cannot host the file directly, but you can find it safely on: no ads before every video