[SimeVidas]

Firefox doesn't have the tap delay anymore. The only remaining browser is Safari, and that is going to be fixed in iOS 9.3.

[reubenmorais]

Firefox doesn't have the tap delay when you use the meta viewport thing to make your page unzoomable. CSS touch-action is still not enabled: https://bugzilla.mozilla.org/show_bug.cgi?id=960316

[SimeVidas]

Why do people keep confusing the viewport meta tag with unzoomability? Those concepts are not one and the same. The default (i.e. most popular) viewport meta tag does not prevent zooming, while it does remove the tap delay in Firefox for Android (and also all other browsers except Safari, but version 9.1 next month will fix that).

So, if you have a responsive (mobile-optimized) site, add `<meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">` and you’re set.