A while back, the developer stated something about the issues with android mostly being related to ram. Which if that's the case, no offense to the developer, I don't see how a game like this wouldn't work on a phone with 2GB of ram.
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generally phones now of days can have anywhere from 4gb or less for budget phones, 6 to 8 gb for middle ground phones going up to 12-16 for the more recent top end phones. This game seems to eat up from 300 to 600 mbs of ram on my pc but CPU wise it may not run well on half the phones out there despite it looking like a simple game considering it's taking 25% of my cpu and I have a I3 8100 which can handle current gen games.
Also, after testing cpu usage in the Linux version, in some rare cases, it seemed to use about 50% of the cpu in my computer, which is an intel core i5-2520M. I don't remember what my phone's cpu is but I know it's a quad-core cpu running at 1.4 ghz, which seems like it should be enough to run this game.