Hello, I was also wondering the same thing, and with a little trial and error, plus some help from a previous post, I worked out how to do it for the ‘Spotlight’ theme. Maybe the same method will work on another Shopify 2.0 theme.
- Go to Admin > Themes > Edit Code (from expanding the … menu)
- Scroll to the Snippets folder and add a new snippet called ‘icon-whatsapp.liquid’
- In this file, paste the svg code for any WhatsApp icon you want to use. I used one from Font Awesome.
- In the tag, add
aria-hidden="false" focusable="true" class="icon icon-whatsapp"
- Now, scroll to the ‘social-icons.liquid’ file under the Snippets folder.
- Just before the end of the
- list, add a
- element like so:
- {%- render 'icon-whatsapp' -%}Finally, click save and preview to see whether it worked! I hope it does - fingers crossed.

Here’s how mine looked.
