The European Commission stepped up its antitrust case against Apple on Tuesday, sending a new complaint to the tech giant outlining its concerns about the App Store's rules for music streaming providers.

The commission said Apple violated antitrust laws by restricting competing music companies like Spotify from advertising where and how users could subscribe to their apps.

According to the statement of opposition, Apple abused its position by sharing its in-app payment technology with music streaming app developers and by limiting the ability of app developers to communicate with iPhone and iPad users' iPad's alternative music subscription service.

"If the Commission concludes, after the company has exercised its rights of defence, that there is sufficient evidence of an infringement, it can adopt a decision prohibiting the conduct and imposing a fine of up to 10 per cent of the company's annual worldwide turnover," said the ruling.

Spotify filed the first complaint against Apple in 2019. In June 2020, the Commission opened a legal process regarding Apple's rules for app developers regarding the distribution of apps through the App Store. In April 2021, the Commission sent Apple a statement of objections to which Apple responded in September 2021.

The commission issued the first "complaint statement" against Apple in 2021, outlining possible antitrust violations.

The Commission found in the first instance that Apple's anti-flying duties are unfair trade conditions contrary to Article 102 of the Treaty on the Functioning of the European Union ('TFEU')", according to the new Statement of Objections.

"In particular, the Commission is concerned that Apple's anti-blocking service to app developers threatens to prevent these developers from informing consumers about where and how to subscribe to ad services and the prices available. down", he added.

This is not the final decision, but it is now up to Apple to confirm its security.