Mobile format in browser is radically different than actual mobile, how do i overcome this issue?

I recently found out about Wix Studio, and i’ve come across some problems. The biggest problem as of now is optimizing websites for mobile. What i see in the preview on my browser is way different than on my actual phone. In fact, i dont think theres a phone in the world with the format that Wix uses for mobile. It just feels like a very tiny browser, but its definitely not mobile.

Screenshot provided, comparing browser mobile to actual mobile.

Wix Studio.

Hello,

At the top of the editor, when you click on phone you have a default format, say 500px, but you can change the value pixel by pixel to adapt it. You can also add breakpoints to improve the site’s responsiveness!

Hello Lucas

So what px should we set it to and what should the values of the break points be?
Your response would be much appreciated.

Kind regards
Spencer