I'm telling you that it literally does run at full CPU all the time, in the background, while the screen is off. That is literally the point of this application. I run this app on several Androids and my phone isn't a fluke, tens of thousands of people use BOINC to donate computational power to scientific research. I don't doubt that it difficult to this on Android, I'm just saying I have clear evidence that it's not impossible. Here's the combined computational power on a graph. https://www.boincstats.com/stats/-1/host/breakdown/os/0/0/1000

Or here's another app, that does the exact same thing, though I have less experience with it. https://play.google.com/store/apps/details?id=au.com.vodafone.dreamlabapp&hl=en_US