add a phone icon to social media icon menu

Hello,

In my footer I have social media icons menu.
For the email when entered it used the proper icon for email.

I would like to add an icon for the phone link as well.
I’ve added it , but it doesn’t add a phone icon, instead it uses a generic ‘link’ icon.

Where can I change the icon it uses?
Or would it be better/easier if I created my own widget importing in the icons I’m wanting to use?

Thank you.
Lee

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