I can't give you a real answer to your question. I used to have a Kindle 3 with 3G and it was able to access websites with 3G but some update since then may have changed that. The thing is that it accessed only very simple websites and did so very slowly and haltingly. Maybe in an emergency I might have been glad it was there but it wasn't something I'd have used by choice.
It also wouldn't access any site with any kind of sophistication at all. It couldn't check my email, at least not by using Yahoo's website. There may have been some other way to access it but it was so slow and jerky and troublesome I wasn't motivated to look for it.
It wouldn't let me get into Dropbox to download books. I think it was the same for Gutenberg. I don't actually remember trying it with Gutenberg but I probably did and if it worked I would have remembered that.
It was decent on Wikipedia, which was always my main use for it, but my 3G Voyage and Paperwhite do that anyway. It's built in so I can tap a selection and look it up on Wikipedia easily. I'm not sure I ever found any serious use for the web browser.
Barry
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