This is not going to be helpful, but in the mid 2000’s I had an Xperia cell phone. It was the first truly mobile device I could get simple game emulators to run on. It also had a dedicated dpad and buttons for gaming. It was fantastic and for what its worth, I didn’t even know they still made phones, but I’m gonna check em out now too.
Edit: Actually, the Xperia 1 VII looks sick as hell, and will probably be my next phone if I can get a hold of one.
I feel ya, I am still trying to figure out what an ActivityPub is.