After submitting data successfully in Marketo, it creates an "onSuccess" event on Desktop, but we aren't getting the 'onSuccess' event on mobile devices. We are facing the redirection issue of "thank you page" after submitting a form in iPhone devices. We have found that you have mentioned this issue in your Marketo docs "https://docs.marketo.com/display/public/DOCS/Minimum+System+Requirements
". Please let me know if there is any workaround.