I don't believe that mining Pi will use resources like CPU or GPU of your phone, that thing works like cloud mining and the project is blah blah to me, never going to waste my time on such ever again, I believe everyone hyping this project knew too less about crypto projects and shitcoins, sorry for my mean words
I don't believe on it either but it consumes the power of your phone that's why it drains battery and lessening its life span. It's just a show that they are allowing you to mine.
But that's not really mining at all.