you cant mine bitcoin with your phone. all those android app claiming to mine bitcoin are all fake just like Hatchy has said, when i was a newbie into this system i came across them and i did all but i couldn't get anything in return . bitcoin algorithm and computation power is too strong to run on android phone. most of this app claims to pay you in bitcoin or in  Sats for the work you do, but that is not mining. most times scammers can send you a virus like malware, Trojan horse, spyware in form of ads or app claiming be a mining app, immediately you install it on your android device, you have just given them the permission to access your device and that could be the end, because all your secret are no longer safe because they now have total control of your device. so its better to stay clear from those type of app that claim to mine bitcoin because no android is mining bitcoin.