I have used the same survey format before and never had an issue. Now the survey will only show one choice, then skips to the next question, if taken on cell phone or iPad. If survey is taken on laptop or desk top, one choice is given, then it allows you to submit the second choice also. This is how it is supposed to work. Why is it not working on the cell phone? Suggestions?
By default surveys have different interactions on desktop versus mobile. You can learn more about these interactions and how to override them in this tutorial:
I hope this helps!
SurveyGizmo Customer Experience Team