if a open a form in a web page at device internet browser, i see prev and next buttons on keyboard at android. so it is very easy to using prev next buttons for filling forms.
in my app, in tms webbrowser this buttons not shown, so it is difficult to submit forms.
We have investigated this here but it involves overriding a function that is technically not possible in Delphi. We will further investigate this here, but currently showing the next/previous buttons is not supported.