The US Justice Department, joined by 16 other state and district attorneys general, has filed a civil antitrust lawsuit against Apple for monopolisation or attempted monopolization of smartphone markets in violation of Section 2 of the Sherman Act.

The complaint, filed in the US 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.

It says that Apple undermines apps, products, and services that would otherwise make users less reliant on the iPhone, promote interoperability, and lower costs for consumers and developers.

It is alleged that Apple exercises its monopoly power to extract more money from consumers, developers, content creators, artists, publishers, small businesses, and merchants, among others.

Through this monopolisation lawsuit, the Justice Department and state Attorneys General are seeking relief to restore competition to these vital markets on behalf of the American public.

“Consumers should not have to pay higher prices because companies violate the antitrust laws,” says Attorney General Merrick Garland. “We allege that Apple has maintained monopoly power in the smartphone market, not simply by staying ahead of the competition on the merits, but by violating federal antitrust law.

“If left unchallenged, Apple will only continue to strengthen its smartphone monopoly.

“The Justice Department will vigorously enforce antitrust laws that protect consumers from higher prices and fewer choices. That is the Justice Department’s legal obligation and what the American people expect and deserve.”

Deputy Attorney General Lisa Monaco comments: “No matter how powerful, no matter how prominent, no matter how popular — no company is above the law. Through today’s action, we reaffirm our unwavering commitment to that principle.”

As alleged in the complaint, Apple has monopoly power in the smartphone and performance smartphones markets, and it uses its control over the iPhone to engage in a broad, sustained, and illegal course of conduct. This anticompetitive behavior is designed to maintain Apple’s monopoly power while extracting as much revenue as possible.

The complaint alleges that Apple’s anticompetitive course of conduct has taken several forms, many of which continue to evolve today, including:

* Blocking Innovative Super Apps. Apple has disrupted the growth of apps with broad functionality that would make it easier for consumers to switch between competing smartphone platforms.

* Suppressing Mobile Cloud Streaming Services. Apple has blocked the development of cloud-streaming apps and services that would allow consumers to enjoy high-quality video games and other cloud-based applications without having to pay for expensive smartphone hardware.

* Excluding Cross-Platform Messaging Apps. Apple has made the quality of cross-platform messaging worse, less innovative, and less secure for users so that its customers have to keep buying iPhones.

* Diminishing the Functionality of Non-Apple Smartwatches. Apple has limited the functionality of third-party smartwatches so that users who purchase the Apple Watch face substantial out-of-pocket costs if they do not keep buying iPhones.

* Limiting Third Party Digital Wallets. Apple has prevented third-party apps from offering tap-to-pay functionality, inhibiting the creation of cross-platform third-party digital wallets.

The complaint also alleges that Apple’s conduct extends beyond these examples, affecting web browsers, video communication, news subscriptions, entertainment, automotive services, advertising, location services, and more. Apple has every incentive to extend and expand its course of conduct to acquire and maintain power over next-frontier devices and technologies.