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Before you try to get interested on what you have found online better read this first
https://www.zdnet.com/article/170-android-cryptocurrency-mining-scam-apps-have-stolen-350000-from-users/Since there's really no way that you became profitable for doing android mining. Legitimate mining hardwares cost lots of $ so anyone offering you such schemes like that is obviously a scam.
So better save yourself for those scams and better find other things on where you can spend your money. Scammers won't get anything from people if they don't let those scammers take their money, so be vigilant always on what you are seeing online since there's provably lots of schemes like this will provably continue to exist.
Even if I didn't understand mining, I wouldn't try to mine bitcoin on an Android phone. I can imagine how easily an Android would overheat when its hardware is continuously working for minutes at a time. So because of the effects of excessive heat - Android can explode more easily because the components inside cannot withstand temperatures exceeding capacity.
Fortunately, mining apps using Android are less likely to be identified as scams. I don't want anyone to fall prey to such schemes and they should avoid them at all costs. The easy of profit is often the reason some people fall into this trap - but they face bad consequences after the time.