We are using several Marketo forms, created with our Spark version of Marketo.
On each of the forms, the phone number field allows up to 200+ characters. It's not required that the digits entered equal the standard phone number. In some cases the validation is standard, or custom, with this code attributed to the field:
Must be a phone number. <span class='mktoErrorDetail'>503-555-1212</span>
But I don't see a difference in either form in the way phone number data is collected. Any advice is appreciated.