New answers tagged payment
The main UX differences between pages and dialogs are: A dialog can have fixed dimensions, whereas a page has to scale. I'd suggest sketching the screens in your payment process for both a tablet and a smartphone in this case. In a person's mind, a page is a new place, whereas a dialog is the same place. Consider how the page looks and whether it's clear ...
Leave alone for payments, generally users don't like modal boxes and find them annoying. From sheer bad experiences like newsletter sign ups the reflex reaction is to close even without reading them (i've personally seen this in user testing sessions). So I've not go with option 1 just that reason.
Top 50 recent answers are included