I wanted to use my WIFI as much as I could, I first went into manage connections, and thought I could shut off Mobile network verizon, I did, internet worked, but I did not recieve calls.

Next try, I have both mobile and wifi connected.

I went to options, advanced options, browser, and clicked on default browser, and clicked on hotspot browser.

It seems to work, is this correct?

My other question is when I leave the wifi area, do I have to change the browser default again, or is it smart enough that no wifi, so it uses the network?

I figure I would use wifi as much as i can for internet, since I have the 150mb plan...

Yes that's correct.
No, you have to change it.
If default browser is hotspot, it will always be hotspot and will only ever use wi-fi.

To answer your question, if you have wifi checked , it will find your saved settings. So yes to your question.

So to be clear, when I leave the hotspot, it will use the Verizon service automatically, even though I have "use Hotspot default" for browsers setting.

Thanks

No.
As I said, because the default browser is hotspot, it will only ever use wi-fi.
You would need to change it to internet browser for it to use the carrier network.

got it, understand now...

thank you