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I have moved your other question about the form on the Facebook app into a separate thread. We prefer handling separate questions into a separate thread to avoid confusions.
Anyway, the form it self should work on any mobile device type, iOS or Android. If the form does not work on your facebook page when viewed via mobile, try embedding the form first using iframe embed code, see if this makes any difference. http://www.jotform.com/help/148-Getting-the-Form-iFrame-Code
Am I right that you are embedding the form on your Facebook page? If yes, then the app you're using maybe doesn't support mobile.
If you are using Static HTML Iframe Tabs as explained on this guide, there's an available short URL on the upper right side of the Static HTML app page when you are on edit mode. This should work on mobile.