The average CTR for mobile ads varies by industry and ad format. However, a typical CTR for mobile display ads ranges from 0.5% to 1%. Video ads tend to have higher CTRs, often around 1.5% to 2%. Interstitial ads can also achieve higher engagement, with CTRs around 2%. Factors such as the quality of the ad, targeting, and the user experience can impact the CTR. Ads that are highly relevant to the user tend to perform better. It's important to continuously test and optimize your mobile ads to improve CTR over time.