I'm having the same issue. I am playing on Bluestacks running android 7.1.1 and a Amazon Fire 8HD running Android 5.1.1. Both have the same issues. I was able to play in my world that was seeded originally in 1.16. But any worlds that I have created in Beta 1.17+ have started crashing within seconds of starting the world since the 1.17.10.20 Beta update. Minecraft completely shuts down.
Stookinator
I'm having the same issue. I am playing on Bluestacks running android 7.1.1 and a Amazon Fire 8HD running Android 5.1.1. Both have the same issues. I was able to play in my world that was seeded originally in 1.16. But any worlds that I have created in Beta 1.17+ have started crashing within seconds of starting the world since the 1.17.10.20 Beta update. Minecraft completely shuts down.