How to create a clic to call button?

[spg.promos]

I´d also like to create a a few more buttons inside a “Contact Us” screen like:
WhatsApp
Email
etc.
Any ideas?

[GoodDoctors]

How about Action Button with external link?

[Shinnawy]

Exactly this!

for whatsapp use: https://wa.me/1XXXXXXXXXX
see (https://faq.whatsapp.com/general/chats/how-to-use-click-to-chat/?lang=en) for more

email: mailto:someone@yoursite.com

[oper2k]

Do not forget disable this function:

For calling use - tel:phonenumber
for email - mailto:email
for social network use just link. For example - https://www.instagram.com/s.gorelov/