You cannot mine bitcoin any more with your mobile devices, laptops or desktop computers anymore. The days when these were possible are long gone.To have any hope on mining at the time, you need some highly sophisticated gadgets to archive this purpose and the cost on energy to run the process is way too high to operate and maintain.

Should you be attempting mining bitcoin by joining any cloud mining site or app, you would as well end up over working your device processor for something that is of no benefit for you.