How to delete frequently visited websites on your iPhone in Safari, or turn off the feature entirely

It's easy to delete your frequently visited sites on an iPhone in Safari. Here's what you need to know to do it.
Ars Technica

Safari frequently visited sites (not working?)

I am signed into a Mac, iPhone, and iPad and for whatever reason a while ago Safari's frequently visited sites stopped working. When I start typing text in the address field I can see history, ...