That makes a FR post appear as an icon on the phone. That's not what I am talking about.
When I am in a post, reading either the article or the comments, the font is too small to read. So I pinch out to make it larger, but then you have to scroll from left to right to read each line, as they are longer than the screen (even in landscape). That is tedious and unpleasant.
A couple of years ago, when I got my first iPhone, I asked for help here and someone taught me how to make a special bookmark that, when clicked, would make that opened page have larger font AND fit as a complete column within the width of the screen.
Holding it sideways is how I Freep on iPhone. Ping me to the workaround if you find it