# Phone Number

The `Phone` field accepts any phone number. whether domestic or international. It also validates the phone number to make sure it's valid.

A badly formatted entry will trigger a validation error on submission and require the user to fix the entry.

![](https://640450274-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FHAVngDAEk3s8Bw7P6Ntz%2Fuploads%2Fi0GKp435VQpyw5wrPaE0%2Fdocs_element-phone.png?alt=media\&token=0b231f13-879d-4ce2-8700-daf4cfa9dfe6)

### Authentication <a href="#example" id="example"></a>

If you configure a Feathery auth integration, you can send an SMS code to the collected phone number. Just add a button with the click action `Send SMS Verification Code`.

### For Developers <a href="#example" id="example"></a>

The Feathery SDK and API reference phone fields with `type` equal to `phone_number`. The submitted value is a `string`.