i think it is very difficalt to do.You cannot mine Bitcoin using the processor on an Android phone. Nowadays all serious Bitcoin mining is performed on dedicated Bitcoin mining hardware called ASICs(application specific integrated circuits), usually in thermally-regulated data-centers with access to low-cost electricity. Think of a Bitcoin ASIC as specialized Bitcoin mining computers, Bitcoin mining machines, or bitcoin generators. Read more about ASICs at : Bitcoin Mining Hardware
However, it might still be possible to profitably mine some other available altcoins/crypto currencies using a GPU on a laptop/desktop. Instructions for setting up can be found at the crypto's official website/GitHub org.
To the best of my knowledge, the only crypto currency a person can currently mine using an Android device is Electronium. This is to be done via their App. (Functionality isn't yet active!!!!)
Thank you for interesting and useful information.But most people in the world prefer not an android..I read about the Electronium fairly successful project with a quick start.I hope they or someone else will be able to offer something for ios owners.