I have an iPhone 7+ and I dont have any trouble with FR at all. I use Firefox and when the page first opens up, I do a double tap and it increases without need for wrapping. I have no trouble reading it at that size. If I want it bigger I rotate the phone and then double tap again.
Good luck.
Sea
Getting Firefox right now. Hope it is the solution, will let you know shortly. Thanks.
Not seeing any double tap option, when I double tap nothing happens.
Feeling stupid.