Has anyone figured out how to play here on their phone?

yeah it works fine for me

I can't run Chrome on my Android phone... I only have Opera or the stock browser. I think I'm out of luck...

what about firefox? thats what i use

Chrome works with Lichess. Maybe it's an idea to make an app for it.

Someone should start a project of it on github.

Why can't you install chrome?

The application is here: https://play.google.com/store/apps/details?id=com.android.chrome

"REQUIRES ANDROID: 4.0 and up", which I don't have.

Flash a custom rom if you are familiar with that. :)