Google AdWords now shows more detailed reports on every call your campaign has received with call metrics enabled. This includes the call's start time, end time, duration, status (missed or received), and area code.
AdWords call metrics, introduced in November, allows advertisers to track the number of phone calls an AdWords campaign generates.
To see the reports, enable the Dimensions tab, click "View," and select "Call metrics calls." You can still view number of calls, received calls, missed calls, total call duration, and average call duration by campaign under the Campaigns tab.
Call metrics availability remains limited for U.S. advertisers. You can request the feature here.