how do i change format for phones

Hi,

There are actually a few ways to make your form mobile responsive.  Here is our guide on how to enable mobile responsiveness in your form:

http://www.jotform.com/help/311-How-to-make-forms-Mobile-Responsive

If that doesn't produce the desired results, you can also try the mobile responsive widget:

http://widgets.jotform.com/widget/mobile_responsive

If you have any further questions, let us know and we will be happy to help.