We still don't know when Pi crypto will be launching officially. Though mining Pi doesn't require any investment or electricity power , its just uncertain whether the project will be a successful one or not. We will get to know soon anyways , probably by end of this year.Pi coin is one of the easiest cryptocurrency you can mine with your phone,I have been mining it for the past two years now and they're still saying that it will come to reality, you can mine it with your phone also if you're interested.