Google VP for partnerships James Kolotouros told a San Francisco trial that the company and Samsung were to share app store revenue to ensure Android mobile devices came with Google Play preinstalled.

Epic, the company that makes the popular video game "Fortnite," sued Google in 2020, alleging the company's app marketplace violates antitrust laws.

Epic is trying to show that Google executives have discouraged third-party app stores on Samsung devices so it wouldn't cut into Google Play's profit.

Kolotouros said that half or more of Google Play revenue comes from Samsung devices. The trial targets the app store that distributes apps for the company's Android software, which powers virtually all the world's smartphones that Apple doesn't make.

Epic alleges that Google has created an illegal monopoly on Android apps to boost its profits through commissions, ranging from 15 to 30 per cent on purchases made within an app. Google argues it was doing so to compete with Apple and its app store, an argument attacked by Epic attorney Lauren Moskowitz.

In the trial, Google's attorney claimed the company can't be a monopoly because it faces competition from companies like Apple.