Meta Platforms is facing a major legal challenge in the US as a federal trial examines allegations that Facebook and Instagram were designed to encourage prolonged and potentially addictive use among children and teenagers.
The case, being heard in Oakland, California, is part of a wider legal push against major social media platforms over alleged harm to young users. Attorneys general from 29 US states are involved in the litigation, with California, Colorado, Kentucky and New Jersey leading the current proceedings.
The states accuse Meta of knowingly developing platform features that encouraged young users to remain online for longer periods while failing to adequately address concerns about their safety. Meta has denied the allegations and maintains that it has invested heavily in tools designed to protect teenagers online.
The lawsuit puts the spotlight on some of the technology behind Facebook and Instagram, particularly recommendation algorithms, notifications, infinite scrolling and engagement-driven design. Prosecutors are expected to argue that these features were developed to maximise user engagement and could make it difficult for younger users to stop using the platforms.
The case also examines whether Meta adequately protected children from potential risks associated with its services. Authorities have raised concerns about the company’s handling of young users’ data and whether it complied with US requirements governing the collection of information from children.
A major focus of the trial is expected to be Meta’s internal research and communications. Regulators and state attorneys have previously cited company documents to argue that Meta was aware of concerns surrounding teenagers’ experiences on Instagram and Facebook.
The allegations extend beyond ordinary concerns about excessive screen time. The states argue that the design of social media services can contribute to problems such as anxiety, depression, body-image concerns and other mental health issues among some young users.
Meta has rejected the suggestion that its platforms are responsible for such problems. The company has pointed to parental controls, age-related protections, teen accounts and other online safety features introduced in recent years. It has also argued that the states need to establish a direct link between specific Meta products and the harms they allege.
The technology company is facing the trial after years of increasing scrutiny over its approach to teenagers. Instagram, in particular, has faced questions over the effect of image-focused content and recommendation systems on younger users.
Meta has responded by introducing additional safeguards for teen accounts. These include stronger privacy settings, restrictions on certain types of content and greater controls for parents. The company has also said it continues to invest in artificial intelligence and other technologies to identify harmful content and improve user safety.
However, critics argue that safety measures introduced after regulatory pressure do not resolve questions about how the platforms were originally designed. The current trial will examine whether Meta’s business model and product decisions placed user engagement ahead of the safety of younger users.
The proceedings are being overseen by US District Judge Yvonne Gonzalez Rogers. An advisory jury is participating in the trial, but its findings will not constitute the final decision. The judge will ultimately determine the outcome.
The trial could run for several weeks and may involve testimony from senior Meta executives. Company leadership could face detailed questions about product development, internal research, content recommendation systems and decisions involving teenage users.
The case is significant for the technology industry because it could influence how courts assess the responsibility of platforms whose algorithms shape what users see and how long they remain engaged.
Meta is not the only technology company facing such scrutiny. TikTok, YouTube and Snap are also dealing with lawsuits and regulatory investigations involving alleged risks to children and teenagers. School districts, families and government authorities across the US have increasingly questioned whether social media companies have done enough to protect young users.
The legal pressure is also encouraging policymakers to examine potential changes to technology regulation. Age verification, parental controls, limits on targeted advertising, notification restrictions and greater transparency around recommendation algorithms are among the issues being discussed.
The California trial represents another test of its approach to product design and child safety. The company must defend its existing practices while demonstrating that its platforms can operate responsibly as governments demand stronger protections for minors.
The case could also have implications for the wider AI and social media technology ecosystem. Recommendation engines and personalised feeds have become central to the way platforms retain users. A ruling against Meta could encourage regulators to examine whether similar engagement mechanisms used across other digital services require stronger safeguards.
At the centre of the dispute is a fundamental question about technology design: when a platform uses algorithms and behavioural signals to keep users engaged, where should the line be drawn when those users are children?
The outcome could influence future product development, content recommendation systems and youth safety policies across the technology sector. It could also increase pressure on social media companies to provide greater transparency about how their algorithms work.