I'm using the phone number field (the international option with the flag dropdown) to capture phone numbers.  I can see that it's based on the intl-tel-input plugin but I'm having trouble adjusting the options.  This field will auto-format the phone number into a national format as you enter it, which for US numbers is (xxx) xxx-xxxx, but then it immediately reformats the number into an international format, which for US numbers is +1xxxxxxxxxx, when you exit the field.  I only want to capture the national format of the phone numbers without any kind of reformatting.  Does anyone know how to do that?