Phone addiction in kids: what the science says and what parents can do

Is phone addiction a real diagnosis?

Not officially. Neither the WHO's International Classification of Diseases (ICD-11) nor the American psychiatric manual, DSM-5-TR, lists "phone addiction." ICD-11 has one narrow diagnosis in this area: gaming disorder, code 6C51. It covers video games, online and offline, on any device.

DSM-5-TR has a similar entry, internet gaming disorder, but only in its section of conditions that need more research. The American Psychiatric Association adds that this entry is limited to gaming and does not cover social media or smartphones.

So "phone addiction" and "screen addiction" are everyday words. They describe a parent's worry well, but a doctor can't diagnose a child with either one.

Habit, problem, disorder

It helps to think in three steps.

A habit. Your child is on the phone a lot, sometimes more than you'd like. But when time is up, they grumble and put it down. They sleep, keep up at school, and see friends outside the group chat.

A problem. The American Psychological Association's 2023 health advisory tells adults to watch teens for signs of problematic social media use. The teen keeps scrolling after they want to stop. They sneak or lie to keep access. Sleep, schoolwork, or relationships with family and friends start to suffer. That isn't a diagnosis, but it is a reason to change the rules at home.

A disorder. The WHO describes gaming disorder with three features: the person can't control how much or when they play, gaming crowds out other interests and daily activities, and they keep going despite clear harm. The pattern usually lasts at least a year and seriously disrupts daily life. According to the WHO, it affects only a small share of people who play, and a doctor makes the diagnosis.

Why hours alone tell you little

Most parents look at the screen time counter first. We checked an anonymized summary of Gardion data for the past month: a typical day for a child on one device comes to about two hours and twenty minutes (the median across more than a hundred families). These are families who already set limits, and the number is still above most official guidelines. We collected those guidelines by age in screen time limits by age.

If you measured addiction in hours, an ordinary school day would qualify. That is one reason the American Academy of Pediatrics (AAP), in its 2026 policy, asks families to move beyond simple screen time limits and focus on quality, context and conversation. An hour of video chat with Grandma and an hour of short videos at midnight look the same on the counter. For your child they are very different hours.

Look at what the phone has pushed out: sleep, time outdoors, homework, friends in person.

What researchers disagree about

The best-known book on the subject is social psychologist Jonathan Haidt's "The Anxious Generation" (2024). Haidt argues that a phone-based childhood drove a mental health crisis among teens. He proposes four norms: no smartphones before high school, no social media before 16, phone-free schools, and more independence and free play.

In a review for the journal Nature, psychologist Candice Odgers answered that the claim about phones "rewiring" kids' brains is not supported by science. Hundreds of researchers, herself included, went looking for large effects and found "a mix of no, small and mixed associations." Most of the data is correlational, and the link may run the other way: teens who already struggle tend to spend more time on social media.

Back in 2019, Oxford researchers Amy Orben and Andrew Przybylski analyzed large surveys of teenagers in the UK and the US. Technology use was linked to slightly lower well-being, about as much as regularly eating potatoes. In the same data, wearing glasses had a stronger negative link, and getting enough sleep and eating breakfast mattered far more.

Sleep is where researchers mostly agree. A 2015 systematic review by Hale and Guan found that in the large majority of studies, screen time went along with later and shorter sleep in school-age children and teens. Cause and effect isn't proven there either, but the takeaway for home is simple.

One more point nobody really disputes. The AAP says many platforms are built to keep users engaged as long as possible, with autoplay, endless scrolling and targeted ads. Adults find that feed hard to put down too, so telling a kid they just lack willpower misses the point.

Our position in this debate is caution. There is no solid evidence that phones by themselves damage a child's mental health. Sleep, though, is suffering right now, and that is the place to start.

What parents can do

Start by watching. For a week, just notice: does your child put the phone down when time is up, are they getting enough sleep, do they see friends in person? That tells you more than any online quiz.

Protect sleep first. The AAP recommends keeping screens out of bedrooms and putting them away an hour before bed. If the phone already sleeps under the pillow, our guide to a child on the phone at night shows how to get bedtime back.

Make the rules a family project. Pediatricians suggest a family media plan with rules for everyone, parents included. We put together a template by age in family media plan template.

Match the approach to the age. With a toddler, you change the surroundings. A school-age child needs an agreement. A teenager should help write the rules. See how to get kids off their phones at every age.

If every bedtime turns into a fight, give a warning a few minutes before time runs out. We cover this in when your child is angry about parental controls.

Bring in technology once you have an agreement. In its explainer of the new policy, the AAP tells parents directly to use parental controls. Gardion keeps the agreement for you: a daily limit, a schedule with a bedtime, and when minutes run short, your child asks for more and you decide. For game-by-game and app-by-app guides, see what you can limit with parental controls.

When to see a professional

If you recognize all three WHO features, the pattern has lasted for months, and your child is sleeping badly, falling behind at school, avoiding friends, or seems anxious or low, start with your pediatrician or a child psychologist. ICD-11 notes that gaming disorder often occurs alongside anxiety, depression and attention problems, so the doctor will look at those too.

More in this series

This article opens our series on children's digital well-being. Also out now: how to get kids off their phones at every age and a family media plan template. For gaming on the computer, read your kid plays video games all day.

Sources

Links checked October 17, 2026.

WHO: Gaming disorder, questions and answers.

ICD-11: 6C51 Gaming disorder.

American Psychiatric Association: Internet Gaming.

American Psychological Association: Health Advisory on Social Media Use in Adolescence, 2023.

American Academy of Pediatrics: Digital Ecosystems, Children, and Adolescents, Pediatrics, 2026.

AAP News: Beyond screen time, 2026.

HealthyChildren.org: Creating a Child-Friendly Digital World, January 20, 2026.

Jonathan Haidt: The four new norms.

Candice L. Odgers: The great rewiring, Nature, March 29, 2024.

Amy Orben, Andrew K. Przybylski: The association between adolescent well-being and digital technology use, Nature Human Behaviour, 2019; Oxford Internet Institute press release.

L. Hale, S. Guan: Screen time and sleep among school-aged children and adolescents, Sleep Medicine Reviews, 2015.