The complaint, filed in the U.S. District Court for the District of New Jersey, alleges that Apple illegally maintains a monopoly over smartphones by selectively imposing contractual restrictions on, and withholding critical access points from, developers.

In opening statements, the Department of Justice painted Google as a monopolist that used its scale and resources, particularly through its exclusivity deals with device makers, to crowd out competitors.

A landmark antitrust trial against Google concluded on Friday after a federal judge heard final arguments, setting the stage for a ruling that could fundamentally shift the tech industry's power.