Smartphone addiction in children: should we wait until age 18 to give them a smartphone?

In Spain, children get their first phone before finishing elementary school

The figures deserve attention.

In November 2025, UNICEF Spain and Red.es published Childhood, Adolescence, and Digital Well-Being, a study involving nearly 100,000 children and adolescents in Spain.

The findings describe a clear pattern:

• In the sample, 41% of 10-year-olds had their own mobile phone.
• At age 12, that proportion reached 76%.
• The average age at which children got their first phone was 10.8 years.
• Some 92.5% of adolescents used at least one social media platform.

These figures describe the people in the study. They cannot establish a diagnosis of addiction or show that all minors use their devices in the same way.

Source: [1] UNICEF Spain · Red.es.

The number of children with phones may matter less than how readily we have accepted access at younger and younger ages.

A 10-year-old can receive a smartphone for a birthday, take it into the bedroom, and use apps designed to hold attention for long periods.

Families often ask, “Which phone should we buy?”

It may help to start with a different question: “Does our child need a smartphone, or do they need a way to contact us?”

Those are different needs.

A basic phone and a smartphone serve different purposes

It helps to distinguish three kinds of access.

A basic phone lets children communicate and ask for help without necessarily offering social media, videos, or unrestricted browsing.

A supervised smartphone can be used for specific tasks, with selected apps, time limits, and adult guidance.

With a smartphone they can use fully independently, children can manage accounts, install apps, watch content selected by algorithms, and stay online almost constantly.

These are different decisions for a family. Parents may need to stay in touch with a child who comes home alone from an activity.

That does not establish a need for private, unlimited access to social media, video platforms, games with purchases, and conversations with strangers.

The Spanish Association of Pediatrics recommends delaying the first smartphone, choosing a phone without internet access when possible, and making a family plan before giving children a device.

Source: [2] Spanish Association of Pediatrics.

A child may need a way to communicate. Unrestricted digital access is a separate decision.

Why is it so hard to stop looking at the screen?

Design features can encourage repeated use. Recognizing their role does not require claiming that a phone has the same effects on the brain as cocaine.

Platforms may include:

• autoplay
• infinite scrolling
• notifications
• personalized recommendations
• variable rewards
• messages that spark curiosity
• and features that make it easy to keep watching without making a conscious decision

These features affect people differently. Using them does not automatically lead to dependence.

They do change the conditions in which a person has to exercise self-control.

That matters particularly in childhood, when planning, emotional regulation, and decision-making skills are still developing.

The World Health Organization and recent research on digital determinants of health point to the design of services alongside the amount of screen time.

Source: [3] The Lancet · WHO Europe.

We should not expect extraordinary self-control from children facing systems designed to hold their attention.

Does smartphone addiction really exist?

The terminology matters here.

“Smartphone addiction” is a familiar phrase. By itself, it does not name a distinct, universally recognized psychiatric diagnosis.

The WHO’s ICD-11 recognizes gaming disorder, which involves a persistent pattern of impaired control, increasing priority given to gaming, and continued gaming despite negative consequences, with significant impairment.

Heavy smartphone use by itself does not meet that definition.

Source: [4] World Health Organization.

When assessing a child, it helps to distinguish:

Frequent use: The child uses the device often while remaining able to adapt and keep up with activities and everyday life.

Problematic use: Significant difficulties emerge around limits, sleep, relationships, or activities.

Possible clinical disorder: A persistent pattern of loss of control and impairment calls for professional assessment.

A single tantrum when an enjoyable activity ends cannot establish a diagnosis.

A worsening pattern of difficulties deserves attention.

The aim is to recognize when technology starts to displace experiences essential to development, without labeling children.

Signs parents should pay attention to

In an assessment, I would look beyond the hours to what happens when the child uses the device and what happens when it is taken away.

I would pay particular attention when these signs recur:

1. Inability to stop despite clear, age-appropriate agreements.
2. Gradually giving up play, relationships, or previously enjoyed activities.
3. Nighttime use that cuts into sleep.
4. Ongoing secrecy or dishonesty about access.
5. Repeated, intense family conflict over screens.
6. Using the phone as the main way to cope with boredom, sadness, or frustration.
7. Academic, social, or family difficulties associated with the pattern of use.
8. Attempts to cut back that do not last.

The child’s age, limits at home, the content they use, and other possible difficulties also matter.

A six-year-old and a 15-year-old have different capacities for self-regulation. An assessment of a child should use age-appropriate clinical judgment.

What research says about getting a smartphone early

A study published in Pediatrics in January 2026 analyzed data from 10,588 participants in the U.S. ABCD study.

At age 12, owning a smartphone was associated with higher odds of depression, obesity, and insufficient sleep, even after accounting for several family and sociodemographic factors.

One distinction is essential: the observational design cannot establish that the phone caused those problems.

Source: [5] Pediatrics · 2026.

A second study, published online in JAMA Pediatrics in June 2026, followed 1,959 adolescents.

In that analysis, getting a smartphone around age 13 was not significantly associated with depression or obesity the following year. It was associated with insufficient sleep. Among those who got a phone, more time spent using it was associated with poorer outcomes in all three areas.

Keeping the phone out of the bedroom at night was associated with a lower likelihood of insufficient sleep.

Source: [6] JAMA Pediatrics · 2026.

The two studies are best read together.

They do not support the claim that every child with a smartphone will develop depression.

Age at first access and patterns of use remain relevant.

Keeping a phone in the bedroom at night may seem like a small decision

A child’s bedroom should be a place where sleep is protected.

With a smartphone, children can easily stay online after their families think they have gone to bed.

The Spanish Association of Pediatrics recommends keeping devices out of bedrooms and bathrooms and setting up device-free areas at home.

Source: [2] Spanish Association of Pediatrics.

The light from the screen is only one consideration.

Timing, content, notifications, emotional arousal, and the ability to stay connected without a natural stopping point also matter.

One practical measure is to set up a shared place to charge devices overnight.

Families can do this without treating it as punishment.

It can be a family rule that adults follow too, while allowing for legitimate needs.

Are we harming children’s attention?

The evidence calls for nuance.

Studies find associations between some patterns of problematic use and attention difficulties. They cannot establish that screens caused every child’s attention problems.

Nor can we diagnose ADHD because a child can focus for hours on a video game but struggles with homework.

Context, motivation, sleep, and the nature of the activity matter.

A practical question is whether digital use is displacing play, reading, movement, conversations, and other experiences a child needs to develop.

Technology can have a place in childhood.

I would protect the in-person experiences that technology can otherwise crowd out.

The concern goes beyond videos to what children encounter online

A smartphone makes it easier to enter spaces that may exceed a child’s emotional maturity.

The 2025 UNICEF Spain report says 29.6% of participants had viewed pornography at least once, sometimes by chance. It also reports experiences of cyberbullying, contact with strangers, and receiving sexual messages.

The sample included children, adolescents, and young people. The findings should not be applied to every age group without qualification.

Source: [1] UNICEF Spain · Red.es.

Entertainment is only part of the picture.

It also includes:

• privacy
• sexuality
• online violence
• pressure about appearance
• relationships
• advertising
• purchases
• and content that appears without being sought out

Adult guidance should include education about relationships and digital life, alongside any limits on hours.

Why do families give in?

Many parents give their child a smartphone despite knowing the risks. Their child might be the only one without one. Friends may make plans through apps. Parents may need to stay in touch or worry that their child will be left out of conversations, activities, or friendships.

That social pressure is real.

A condescending “Just don’t buy one” does not help.

A family has a much harder time upholding a decision alone than when several families agree on similar boundaries.

Alongside education for parents, schools and communities need shared agreements.

Each family should not have to negotiate on its own in the face of an increasingly widespread practice.

Should we delay smartphones until age 18?

I want to distinguish what the evidence shows from what I am proposing.

Research has not established that people become digitally mature automatically when they turn 18, or that this is the only safe age.

I still think it is reasonable to consider a highly precautionary policy:

Delay fully independent access to smartphones and high-risk digital platforms until the age of majority. Before then, offer ways to stay in touch and provide supervised access that expands gradually with development.

Children could still learn computing, use educational materials, communicate with their families, and use digital tools adapted to their needs.

The proposal questions whether children aged 10 or 11 need a personal device that is always connected and gives them practically unlimited access to commercial services designed to capture attention.

The age of majority could serve as a regulatory reference for fully independent access. While any rule is being debated, digital education, adult guidance, and attention to individual needs remain necessary.

Specific circumstances also matter, including accessibility, disability, safety, and family communication needs.

Precaution should leave room for children who need particular tools.

Laws and proposals in Europe and Spain

This debate is now in the mainstream.

In Australia, since December 2025 certain social media platforms have been required to take reasonable steps to prevent people under 16 from creating or keeping accounts. The rule concerns accounts on those platforms. It does not prohibit owning smartphones.

Source: [7] eSafety Commissioner · Australia.

In Spain, the government proposed raising the minimum age for social media access to 16. The bill to protect minors in digital environments was not passed before Parliament was dissolved on October 6, 2026. It remains a proposal, and its scope differs from a general prohibition on owning a phone.

Source: [8] Spain · Congress and Official State Gazette.

On October 20, 2026, Spain’s Ministry for Digital Transformation published its consultation on the proposed EU Kids Act. The announced submission window ran from October 21 to November 4, 2026, at 11:59 p.m.

The measures under consideration include limiting addictive design features, safer recommendation systems, stronger privacy protections, and age-appropriate access conditions.

The EU proposal considers restricting independent accounts on social media and video platforms for children under 15, with limited, supervised options for certain age groups.

Source: [9] Spain · European Commission.

Proposed measures and restrictions already in force have different legal status.

My suggestion to debate age 18 for fully independent access goes beyond some of these proposed thresholds.

Children cannot carry the responsibility alone

One part of the debate deserves particular attention.

Parents have a responsibility to guide screen use.

Digital platforms also have business models, recommendation systems, and design choices that shape the situation.

The series published in The Lancet in October 2026 examines digital determinants of health, including how technology design, commercial incentives, and regulatory decisions influence children’s experiences.

Source: [3] The Lancet · WHO Europe.

Protecting children requires responsible families, engaged schools, and technology companies subject to safety obligations proportionate to the risks.

It would be misleading to attribute every difficulty to a lack of discipline at home.

My proposal by age

The Spanish Association of Pediatrics offers guidance on screen use. These professional recommendations differ from legal rules and from individual thresholds for a clinical disorder.

Source: [2] Spanish Association of Pediatrics.

“My child already has a phone, and we don’t know how to take it away”

This is probably one of the most common difficulties.

Taking every device away abruptly can turn home into a battleground and is not necessarily the right first step.

I would start by asking: What exactly are they doing with the phone?

Keeping in touch with friends is different from watching videos for hours, gambling, playing games with microtransactions , or constantly seeking reassurance on social media.

Then I would ask: What are they giving up to use it?

Sleep, schoolwork, going out, play, conversation, and family activities may tell us more than a single number.

When a family is dealing with problematic use, I would suggest reviewing schedules, apps, rules, adult guidance, and other ways to spend free time. The measures should fit the child’s age and the severity of the problem.

The AEP offers a free tool to create a Family Digital Plan (in Spanish).

It will not solve every problem, but it can help families agree on rules before an argument starts.

What parents can look at in their own behavior

Children learn from both rules and what they see adults do.

If all the adults keep checking their phones during a meal, it will be hard to explain why a device does not belong in every conversation.

Parents do not need to be perfect.

Shared rules can help:

• Phone-free meals.
• Devices out of bedrooms overnight.
• Family time without notifications.
• Room for play and in-person recreation.

Adults can also explain when they need their phone for work or a specific responsibility.

A rule feels more consistent when it applies to the family instead of feeling like a punishment for the child.

What if the child reacts aggressively when the phone is taken away?

That behavior alone would not justify an addiction diagnosis.

An assessment should consider age, emotional development, previous limits, context, sleep, and possible neuropsychiatric difficulties.

A strong reaction may reflect frustration, problems with self-regulation, earlier conflicts, or a pattern of digital use that has become particularly hard to interrupt.

I would advise against responding to violence with violence or using humiliation or threats to teach a child.

The intervention should protect everyone’s safety and help rebuild limits the family can maintain.

When to seek a clinical assessment

It may be appropriate when phone use is persistently affecting sleep, school, relationships, or family life, and reasonable attempts to change it have not worked.

An assessment needs to distinguish:

• heavy use
• difficulties setting and maintaining limits
• self-regulation problems
• anxiety
• ADHD
• depression
• gaming disorder
• family conflict
• and bullying or other online risks

These difficulties call for different responses.

The phone is not automatically the cause.

In an initial assessment, I would look at what happens before, during, and after use, what the child can still do well, and what the family hopes to change.

The child should participate in a way that fits their age.

The parents’ concerns matter, and we also need to understand what the child is experiencing.

Where needed, care should be coordinated with child and adolescent psychology or psychiatry, pediatrics, and the school.

Is there medication for smartphone addiction?

No specific medication is approved for a general diagnosis of “childhood smartphone addiction.”

Treatment generally focuses on the pattern of use, the family and environment, and any associated problems.

It may include guidance for parents, changes in habits, psychological work, and treatment for co-occurring conditions when present.

I would not use psychiatric medication to make a child accept a screen rule.

When medication is indicated, it should address a clinical diagnosis and its own treatment goals. It should never serve as a disciplinary measure.

Digital technology can also help children

The internet can support learning, creativity, contact with relatives, accessibility, and social participation.

UNICEF highlights these opportunities and the need for protection, education, and participation as children learn to use technology.

Source: [1] UNICEF Spain · Red.es.

Children need opportunities to learn about privacy, misinformation, artificial intelligence, and how to get along online before turning 18.

The question is how to teach these skills without expecting children to face all the risks of platforms independently and too early.

Children can learn about technology without unrestricted use of a personal device.

My position on access, adult guidance, and regulation

I believe Spain should seriously debate delaying fully independent access to smartphones with high-risk digital services until age 18.

Turning 18 does not suddenly change the brain. Not every minor will develop problems, and technology still has a place in education.

The proposal starts from precaution. When technology can expose minors to ongoing risks they are still learning to manage, responsibility for safety should be shared beyond children and their families.

The proposal should include alternatives for communication, supervised access, and gradual learning.

It also requires listening to children and adolescents, accounting for individual needs, and evaluating the real effects of any regulation.

An age limit alone cannot address designs that encourage compulsive use or a lack of resources to guide families.

I am concerned that technology can organize too much of childhood before children have time to develop other ways to play, be bored, get along with others, learn, and make decisions.

That discussion should take place without demonizing children or blaming parents.

Frequently asked questions

Source: [10] INCIBE.

Sources and resources for families

Related reading for parents: Pornography and compulsive sexual behavior: reading for adults (in Spanish).