Smart phones have far less real estate and frevvo and
will layout your controls as if the smart phone screen only has 4 columns. So, a total of 4 columns of width will fit on a phone (irrespective of portrait or landscape mode). If a control is wider than 4 columns, it will shrink to 4 columns. If you have a 6+6 layout, the two controls will shrink to 4 columns (i.e. take up the entire width of the screen on the phone) and be laid out one below the other. Again, the best approach to learning this is to simply try it. Click the Test button for your form after saving it. In the Test popup there are icons representing Tablet and Smart Phone. Click on them and
will display an approximation of how the form will look on that device. Of course, to get an accurate representation, you should test on the actual device.