In the editor interface, click [Phone]. Then enter your phone number in the blank and click [Save].
![add-a-click-to-call-button](https://cms.flipbuilder.com/wp-content/uploads/2022/02/add-a-click-to-call-button.png)
Before saving, you also can customize this phone icon such as opacity, size, position and rotation in the [Style] panel or upload a new image as a phone icon. Moreover, you can set entrance/attention/exit animations for this phone icon.
![customize-the-call-button](https://cms.flipbuilder.com/wp-content/uploads/2022/02/customize-the-call-button.png)