You could create a second questionnaire and redirect them there (a setting in compose questionnaire -> settings, see Questionnaires for Smartphones). However, iPads are not identified as mobile devices.
Another option is to use a question "device and transmitted variables" to measure the screen size. If it is too small, you can screen them out.
And even another option is to wait for a key stroke: Hide the "next" button via JavaScript and use some more JavaScript to get to the next page via space bar.