WPForms

WPForms Lite has no phone field of its own; its Phone field is part of WPForms Pro. With Devix Phone Field, any Single Line Text field becomes an international phone field:

1. Edit the form and add a Single Line Text field. Name it Phone.
2. Open Field Options → Advanced → CSS Classes and enter devix-phone.
3. Save.

On the site, the field gets the country button, formatting and live validation. When the form is submitted, the number is checked on the server:

• Invalid: the form shows WPForms' error under the field.
• Valid: the entry, notification emails and any integrations receive the number in the saved format.

Required fields stay required using WPForms' own Required switch.

The default country, allowed countries and mobile-only rule come from Settings → Phone Field.