Yes!
Instead of tel:
use sms:
You can even put together a message to auto-load in the message section. Let’s say you have a “First Name” column:
Concatenate("sms:",thisRow.[Phone number],";?&body=Hi%20",thisRow.[First Name],"!%20")
This results in: "Hi Ben! "
The %20
is code to add a space between characters.