[udfalkso]

Right. This is also the current standard approach for asking for iOS push permissions. Without intermediary dialog, the app can't try again.

[Cthulhu_]

And as app builders you have to explain people how to enable the permission anyways if people try to e.g. use their current location. Luckily since a few versions now, iOS allows apps to directly open a certain settings page, e.g. location services.

[finchisko]

But if user decline native dialog once, it will not be asked again (at least for location services). So intermediary dialog won't help on iOS.