How to earn revenue with mobile ads
The main way you earn revenue with AdSense for mobile is by displaying Google ads on your mobile website. The ads you display can be either cost-per-click (CPC) or cost-per-thousand-impression (CPM) ads. For CPC ads, you'll generate earnings when your users click on the ads. For CPM ads, you'll generate earnings every time the ad appears to a user viewing your site.
You can also place an AdSense for search box on your site and generate earnings from ad clicks made by users on the search results pages. If you already have search functionality on your site, you can apply to show AdSense Custom Search Ads on your desktop site, mobile site, or mobile app.