Users can play around with 'about:config' in Firefox Desktop Browser but not with the one in IOS. What is the alternative to Firefox app on IOS so that users can configure the browser in a similar way to their desktop version? I prefer not to use Safari because it's not configurable. Puffin Browser is fast but there is no way to do some 'toggle' work and ad-blocking extensions add-on. Hope this thread be helpful to other people who have the same question.