The plugin uses a shortcode to do the following:
* On mobile: make a phone number callable from any phone
* On desktop: make a phone number callable via Skype
To use the plugin wrap your phone number in [phone] [/phone] shortcode.
Example
`
[phone]+1 847 847 47 10[/phone]
`
A plugin with similar functionality can be found here https://wordpress.org/plugins/telephone-number-linker