There are 2 ways to achieve this: using our Call Buttons, or using Plain Text

To design your own click to call button on your mobile or desktop site, you can use our Button Elements. 

Click and drag a "Call" button of your choice from the Elements Panel

Select your new "Call" element, and use the Properties Panel to make yoru design changes. 

Most mobile phones will automatically detect a phone number on a website, and add the Click to Call function to it. 

But if using plain text, this can often cause the numbers to appear as a link and turn blue.