What does a call extension let users do that call-only ads do not?
Choose from two different numbers to call.
Easily save the number to their phone’s contact list.
Easily schedule a call-back from the advertiser when the line is busy.
Click through to your mobile site instead of calling.
Explanation:
Call extensions let you add phone numbers to your ads, which can significantly increase clickthrough rates. When your call extensions show, people can tap or click a button to call your business directly.
Ads created in call-only campaigns are fine-tuned to show only on mobile devices that are capable of making calls. Taps on these ads will only generate calls – they won’t link to a website.