I think that this is very wrong. Because the phone's processors are not designed for such loads, I think that if you want to lose the phone very quickly, then you can try this kind of activity. Personally, I am against such a thing
Correct. Mining needs high power consumption and super fast processor, graphics card are used for blocks in hardware mining farms and android phones or any phones is not upto that speed to mine. You not only waste your phone but waste your precious time also doing mining with phone. Try something to build a mining rigs with data card instead.