Google Call Only and Google Call Extensions both target people on their mobile phones. But what are the differences?
Google Call Extensions are for businesses that want to drive traffic to their websites AND get direct calls from their ads on Google Search. Companies with conversion optimized websites can use the Call Extension as an addition to their advertisements on mobile phones. The phone number will show up on desktop devices and on mobile devices as well. The focus however is generating website traffic.
Google Call Only ads focus ONLY on generating calls as leads. The website is shown in the advertisement, but it is not