The School Phone Ban: What the UK Has Done, What the Evidence Actually Says, and What Parents Are Doing Anyway

Walk into a Year 9 dining hall in an English comprehensive school in January 2024 and the first thing you notice is the quiet. The room is full, the food is being eaten, but most of the talking has gone. Maybe two thirds of the children are looking down at a small bright screen. The conversations that do happen are short and glancing. The friendship group is not at the table; it is in the phone.

Walk into the same dining hall two years later, after the school has gone phone-free for the whole day, and the noise is different. It is messier. There is laughing, arguing, the occasional drama. Some teachers describe it, almost embarrassed, as feeling like a school from twenty years ago. Some children miss their phones. Some are relieved not to be expected to be on them.

This is the smallest, most visible version of a question that policymakers, neuroscientists, head teachers and parents have been arguing about for the better part of five years. Are children worse off because of what is on their phones, and if so, what is the right way to do something about it? The answer is more contested than the headlines suggest. The decision is also already being made, in different ways, by the British state, by other governments around the world and by hundreds of thousands of British parents on their own.

It is easy to lose track of what is rule and what is rhetoric. The UK has done four distinct things, in sequence.

The combined effect is that, from summer 2026, every state school in England is expected to be phone-free for the whole school day, and every major social platform is expected to verify ages before letting users in. The under-16 account itself is not banned.

The story most easily told in headlines is one of policy. The story most parents actually live is one of agreement among themselves, made before any law caught up.

In early 2024, two mothers in Suffolk, Daisy Greenwell and Clare Fernyhough, started a WhatsApp group for parents who did not want to be the only ones holding out against the family pressure to give a child a smartphone. Within weeks the group had thousands of members. By the end of 2024 it had become a registered UK charity, Smartphone Free Childhood. By January 2026, more than 151,000 UK families and 12,000 schools had signed the Parent Pact, agreeing to delay smartphones to age 14 and social media to 16. The movement now has affiliates in 42 countries.

The reason it spread is worth pausing on. Most parents are not against phones. They are against being the only family in their child’s friendship group whose ten year old does not have one. Once parents could see other parents holding the same line, the line became easier to hold. The movement is, in effect, an organised solution to a collective action problem that the technology itself created.

This matters because it changes the question. The argument is no longer whether to do something about the smartphone in childhood. The argument is whether what is being done is best done by the state, by schools, by platforms, or by the slow accumulation of agreements between parents.

If you have read any of the popular books on this, you will have an answer. The trouble is that the answer depends on which book.

In 2024, the American social psychologist Jonathan Haidt published ‘The Anxious Generation’, arguing that the rapid rewiring of childhood between roughly 2010 and 2015, away from play-based outdoor life and towards phone-based indoor life, was the principal cause of the rise in teenage anxiety, depression and self-harm seen across the developed world. Haidt’s recommended response, set out in the book, was four norms: no smartphone before high school, no social media before sixteen, phone-free schools, and more independence in the real world. The book sold heavily and shaped policy conversations in the UK, the US and Australia.

Within months, a group of researchers led by Andrew Przybylski at the Oxford Internet Institute and Amy Orben at the University of Cambridge published detailed methodological critiques. Their core argument is not that smartphones are good for children. It is that the empirical link between smartphone use and the mental health crisis is much weaker than Haidt’s book suggests, that the correlations are small in size and inconsistent across countries, and that simpler explanations such as economic hardship, school pressure and changes in the way mental health is measured may account for much of the pattern.

The most honest summary of where the evidence sits in 2026 is this. There is good evidence that excessive late-night social media use disrupts sleep, and that sleep disruption is bad for children’s wellbeing and school performance. There is reasonable evidence that algorithmic recommendation systems can deepen body image, eating disorder and self-harm content exposure for vulnerable users. There is weaker, more contested evidence that smartphone ownership in itself, controlling for everything else, is the primary driver of the teen mental health crisis. The strongest claim is not yet supported by the strongest evidence.

What about phone bans in schools specifically? Here the picture is also mixed. A 2024 study by the London School of Economics’ Centre for Economic Performance, looking at 91 English schools that introduced phone bans, found a 6.4% improvement in standardised test scores for 16 year olds. A 2024 international meta-analysis found no consistent measurable effect on grades or wellbeing across studies. A University of Birmingham study published in February 2025 compared 30 English schools with restrictive versus permissive phone policies and found no significant differences in mental wellbeing, anxiety, depression, academic achievement, disruptive behaviour, sleep or physical activity. A South Australian study found measurable wellbeing improvements after that state’s phone ban came in. The honest reading is that phone bans in schools may help, may help some children more than others, and are not by themselves enough to undo the wider effects of phone and social media use outside school.

No other country has gone as far as Australia. The Online Safety Amendment (Social Media Minimum Age) Act 2024 was passed by the Australian Parliament on 29 November 2024 and came into force on 10 December 2025. The Act makes it unlawful for designated social media platforms to allow Australian users under sixteen to hold an account. Penalties for non-compliance run up to AUD 49.5 million per platform.

The current list of restricted platforms includes Facebook, Instagram, Reddit, Snapchat, TikTok, Twitter, Threads, Twitch, Kick and YouTube. The Australian eSafety Commissioner is the regulator. Platforms are required to take ‘reasonable steps’ to prevent under-sixteens from holding accounts. The Act does not require any specific verification technology, but does require the steps to be effective in practice.

In March 2026, four months after enforcement began, the Australian government announced investigations into Meta, TikTok, Snapchat and YouTube for inadequate compliance. The eSafety Commissioner accused the platforms of letting children who had already self-declared as underage make repeated attempts at age verification, and of failing to prevent the creation of new under-age accounts. The first major fines under the Act are expected in 2026.

France went first on the school day. In July 2018 the National Assembly passed a law banning mobile phones in primary and middle schools, extending an existing classroom ban to breaks and lunchtimes. The exceptions were limited to disabled pupils, emergencies and specific pedagogical use under teacher supervision. The ban applied to phones, tablets and connected watches.

The early evidence was promising. A study by the LSE Centre for Economic Performance found that, in a sample of English schools that had introduced phone bans, standardised test scores for 16 year olds rose by 6.4%, with the largest gains for low-attaining and disadvantaged students. A separate US study found that students without phones in lessons took 62% more notes and scored a letter and a half higher on multiple choice tests. These studies were part of the evidence the French government cited when pushing the 2018 law.

Six years on, the evidence is less clear. A 2024 meta-analysis pulling together international studies concluded that the presence or absence of mobile phones in schools, in itself, did not show a consistent measurable effect on grades or emotional wellbeing. France’s own National Research Agency review of the policy reached similar conclusions. In 2024 the French government piloted a tougher ‘digital pause’ in middle schools, requiring phones to be locked away on arrival rather than kept in pupils’ bags, on the basis that the original ban was being widely circumvented in practice.

The honest lesson from France is not that phone bans do not work. It is that the difference between a policy on paper and the same policy in a real school is large. Enforcement, lockboxes, the culture of the staff room, the wider phone environment outside school: all of these shape whether a ban delivers anything beyond a quieter corridor.

It is tempting to treat this debate as a contest between sensible adults who want to protect children and out-of-touch technologists who want to keep them online. It is not. There are serious people on every side, and the disagreement is genuine. Below are the strongest cases as a fair reader would hear them.

There is also a third position, sometimes overlooked, that holds that the school phone ban is straightforwardly sensible because of attention and classroom disruption, regardless of the wider mental health argument. On this view, lessons are easier to teach without phones, and that is reason enough.

Beneath the policy fight is a question that goes back longer than smartphones. Who decides what is good for a child? In the UK, the answer has always been a layered compromise. Parents decide most things, within a frame set by the state. Schools take over for a quarter of a child’s waking hours. The state intervenes when parents fail to protect a child from serious harm. The boundary between these layers shifts with each generation. The smartphone debate is, in part, a redrawing of that boundary.

For some, that redrawing is overdue. Children are exposed to commercial pressure, algorithmic curation, adult contact and a body image culture that no individual parent can fully manage on their own. Collective protection by school, regulator or law is the obvious response. For others, the new lines amount to outsourcing parenting to the state. The same parents who would protest a school telling them what to feed their child are now grateful for a school taking phones away. Either response can be coherent.

There is also a child development question that often gets lost in the policy noise. Adolescence is, by design, the period in which children learn to navigate risk independently. Boredom, friendship rupture, social comparison, exclusion, failure, recovery: these are the developmental tasks of being a teenager, and they need a reasonable amount of unsupervised space to happen. The smartphone has compressed all of that into a single device and made it constant. Many of the same researchers who are sceptical of the strongest Haidt claims still argue that the issue is not the phone but the loss of unstructured time, real-world risk and offline friendship. Whatever a country does with phones, the deeper task is restoring that.

Four threads will run together over the next twelve months in the UK.

• The statutory school phone duty starts on 29 June 2026 and Ofsted inspections under the new framework begin from the autumn 2026 term. Enforcement, exceptions and the experience of schools that have already gone phone-free will shape what happens to the schools still resisting.
• Ofcom’s age assurance deadlines under the Online Safety Act run through 2026. Major platforms face material enforcement risk if they fail to deploy real age checks. The technologies they choose (facial age estimation, ID-based verification, one-time photo matching) will set the privacy and reliability trade-offs for years.
• The Australian enforcement story will shape the UK’s. If Australia secures large fines and sustained compliance from major platforms through 2026, the Westminster argument for a UK ban will get louder. If Australian platforms slip the leash, the argument will tilt back towards regulating design and timing rather than prohibiting accounts.
• The Smartphone Free Childhood movement is now a national institution. If it continues to grow at its current rate it will become an increasingly normal default among UK families, regardless of the law. The policy debate may end up catching up with a cultural shift parents have already made.

Whatever happens to the wider policy, there are concrete things a parent or school can do today. None of them requires a new law.

Phones are now banned for the school day in every state school in England, by statutory guidance backed by primary legislation from 29 June 2026. The UK has so far chosen the school-day route and the platform-regulation route, not the Australia route of a blanket under-16 ban. The evidence on whether phones in themselves are the cause of the teen mental health crisis is more contested than the popular debate admits. The evidence on whether late evening social media disrupts sleep, and whether sleep loss is bad for children, is not contested at all.

The most honest thing to say is that the policy is moving in a sensible direction, faster than the science is settled, partly because the cost of getting it wrong is low and the cost of waiting feels high. Parents are leading. The state is catching up. Other countries are running ahead. The deeper question, of what childhood is supposed to look like when most of its small private rituals have been moved onto a screen owned by a company in California, is one no policy can answer on its own. That part is on us.