Apple faces Epic Games in court over App Store

Apple takes a commission of 15% to 30% on purchases made within apps (Matthias Schrader/AP)

Technology giant Apple is facing a trial that threatens to upend its iron control over its App Store, which brings in billions of dollars each year while feeding more than 1.6 billion iPhones, iPads and other devices.

The federal court case in the US is being brought by Epic Games, maker of the popular video game Fortnite.