Mobile site option?

I'm sure I read that I can change a setting so that when I browse on the Internet I will get the mobile site automatically. Can someone tell me if this is true or if it is not automatic, is it manual? If I have to change a setting, where would I do this?

Using my BlackBerry Classic :-)

It's already mobile by default. There is a toggle in the browser settings.

Z30STA100-5/10.3.1.1154

Thank you.

Using my BlackBerry Classic :-)