How to create a .sis file?

I just developed a Qt Quick project and I was wondering how to extract the .sis file. I don't really know Qt that much, but from what I've heard, you'll need to extract the .sis to deploy the application into your mobile phone.

Thanks!

When building your project choose the option to Release it on a Symbian Device. Then when u build the project a .sis will automatically be created in your project's directory.
I'm new to Qt too so i'm not sure if this is the best solution but it works well enough for me.