Yes, you can use the TEL URL Scheme. For example: tel:+12819374192.

In its original format, Manychat doesn't recognize it as a valid URL. However, you can use it this way: tel://+12819374192.

BUT...

Manychat always includes a tracking parameter on buttons to identify the number of clicks, and this BREAKS the tel: scheme .

Therefore, a "small" workaround is necessary:

1. You need to create a page on your domain (let's assume the path is "your-domain.com/tel").
2. On this page, insert only the following script:

   <script>
   function getQueryParam(param) {
       let urlParams = new URLSearchParams(window.location.search);
       return urlParams.get(param);
   }
   
   let phoneNumber = getQueryParam('phone');
   
   if (phoneNumber) {
       window.location.href = `tel:${phoneNumber}`;
   }
   </script>

   This script takes the value of the phone parameter and redirects the page to tel:+phone.
3. Publish the page.

Now you just need to insert the link in this way on a button in Manychat so that anyone who clicks it will be redirected to the phone dialer app with your number already filled in: http://your-domain.com/tel/?phone=+12819374192

Hope it helps!

Thank you so much, this was incredibly helpful.