Google Click-to-Call FAQ:
# What's the phone icon on Google search results? How does it work?
We're testing a new product that gives you a free and fast way to speak directly to the advertiser you found on a Google search results page – over the phone.
Here's how it works: When you click the phone icon, you can enter your phone number. Once you click 'Connect For Free,' Google calls the number you provided. When you pick up, you hear ringing on the other end as Google connects you to the other party.
We won't share your telephone number with anyone, including the advertiser. When you're connected with the advertiser, your number is blocked so the advertiser can't see it. In addition, we'll delete the number from our servers after a short period of time.