Phoneword provides a block displaying a click-to-call telephone link that cross-fades between a phone WORD and its corresponding phone NUMBER e.g. "1800 DRUPAL" to "1800 378275". Clicking the link will launch the user's phone number dialler (if installed) or alternatively it can link to a "contact us" page.
An experimental D8 module which provides third-party settings for Field API widgets, allowing site builders control over how field descriptions are displayed on entity forms.