Do we have any minning app, that we just install and it gives us bitcoins ?
In the backend it uses oue phone's resources and in return gives us bitcoins ?
I believe you are like 7 years late to the party. Those days have been long gone where you could have got 1-2 BTC for just filling out a captcha or using your CPU to mine "Bitcoins" But just like others mentioned there are ways to generate minuscule amount bitcoins through different apps. If you want to make "Bitcoins" Start providing different services. Use your skills and you will be making a decent amount of bitcoins in no-time. Good Luck!