First off, it is recommended that you create a separate campaign just for your
mobile adverts and settings. Then, mobile display network adverts can use one
of three different actions if advertised on the Google display network:
• (The usual) Clickthrough to the advertiser site.
• A click that sends the user to a Google-supplied Business Page.
• A click that immediately and automatically places a voice call to the
advertiser’s phone number, called a click-to-call advert.