Is Phone Addiction Real? What the Research Actually Says

Not as a diagnosis. Neither of the two manuals clinicians use, the World Health Organization's ICD-11 and the American Psychiatric Association's DSM-5-TR, lists smartphone or phone addiction. What does exist, and is well measured, is problematic smartphone use: a pattern that causes real harm to a minority of people and gets described as addiction far more often than it meets that bar.

How common it is depends almost entirely on the definition. Screening questionnaires put it at around a quarter of people. A representative US survey that required the use to be causing functional impairment put it at about 1 per cent. The useful question for you is not whether the word applies, but whether your use is costing you something you have tried and failed to get back.

What the diagnostic manuals actually say

The American Psychiatric Association is explicit. Its guidance on internet gaming states that gambling disorder is the only behavioural addiction in DSM-5-TR, that internet gaming disorder sits in the section of conditions recommended for further research, and that this proposed condition does not include general internet use, social media or smartphones.

The WHO goes one step further for games. ICD-11 includes gaming disorder, defined by impaired control, gaming taking priority over other interests, and carrying on despite harm, with significant impairment usually evident for at least 12 months. The WHO notes it affects only a small proportion of people who play.

ICD-11 also has a slot for other specified disorders due to addictive behaviours. A 2022 consensus paper by leading researchers in the field set out criteria for what might qualify and found varying support for problematic pornography use, buying-shopping and social network use. Smartphone use was not on the list. The field has largely moved towards asking what people do on the phone rather than treating the device itself as the problem.

Why researchers argue about the word

Two reviews set the tone. Billieux and colleagues concluded in 2015 that the evidence supporting problematic mobile phone use as an addictive behaviour was scarce, and described it as a mixed condition with several routes into it. Panova and Carbonell reviewed the literature in 2018 and found insufficient support to confirm that smartphone addiction exists, recommending the term problematic or maladaptive use instead.

A 2021 position paper argued that research should study what people overuse rather than the device they use it on. Someone who cannot stop gaming on a phone and someone who cannot stop checking work email on one have different problems that happen to share a device.

None of this says the harm is imaginary. It says the label promises more than the evidence delivers, and that matters because the label shapes what people try next.

Why the numbers run from 1 to 27 per cent

A 2022 meta-analysis of 504 studies covering more than two million people in 64 countries put the pooled prevalence of smartphone addiction at 26.99 per cent. A 2019 review of 41 studies of children and young people found a median of 23.3 per cent, about one in four. Both rest on self-report screening questionnaires with a cut-off score, and the first study's authors note that estimates varied with the scale used.

The cut-offs are the weak point. A meta-analysis of the most widely used scale across 24 countries points out that its thresholds came from a single sample of South Korean high-school students, that by those thresholds most recent samples from several countries would count as high risk, and that the cut-offs may need updating to avoid pathologising behaviour that has simply become normal.

Then add the requirement that the use is actually causing harm. A representative survey of 1,989 US adults found problematic smartphone use at 0.75 to 1.2 per cent once a functional impairment criterion was required, against the 20 to 30 per cent reported by studies that define it more loosely.

The gap between them is the main thing to know: most of what gets called phone addiction is heavy use that has not been shown to impair anything.

The line between a heavy habit and a problem

The most useful definition comes from a 2017 paper that set out to describe behavioural addiction without pathologising ordinary behaviour. It asks for three things together: the behaviour causes significant harm or distress that impairs how you function, you have not been able to reduce it, and it has persisted over a significant period.

It also lists what does not count. Heavy use is not an addiction if it is better explained by an underlying condition such as depression, if the cost is a choice you are making deliberately, if it is intense involvement without impairment or distress, or if it is a way of coping with something else.

Turned into questions you can ask yourself, the Royal College of Psychiatrists' report on technology use suggests a similar set to the ones clinicians use with young people:

• Is it affecting work or study, family time, or time with friends?
• Is it changing your mood or behaviour?
• Can you go offline when something important needs you to?
• Are you using it to avoid stress or difficult feelings?

Hours alone do not answer any of these. A long screen time total with none of the above is a habit you might want to change. A modest total with several of them is worth taking more seriously.

The link with anxiety and depression

The association is consistent. A systematic review of 23 studies found depression severity consistently related to problematic smartphone use with at least medium effect sizes, and anxiety consistently related with small ones. In the review of young people, problematic use was associated with roughly three times the odds of depression and of anxiety, and with higher odds of stress and poor sleep, though most of those estimates were rated low certainty.

The direction is the open question. Almost all of this evidence is cross-sectional, and the authors of both reviews say plainly that they cannot tell which came first. That has a practical consequence: if low mood or anxiety came first and the phone is how you cope with it, tightening phone rules treats the symptom and leaves the cause alone. The professional body's report reaches the same place, noting that it remains unclear whether problematic technology use is a cause or a consequence of poor mental health.

What treatment evidence there is

Help exists and, on the evidence so far, tends to work. How well is less certain than the headline numbers suggest.

A 2026 umbrella review pooling 29 meta-analyses and 66,530 participants found interventions reduced smartphone addiction scores with a standardised effect of 0.80, but described the certainty of evidence as generally low, and the studies varied enormously. A second 2026 review of 125 studies found large effects for psychological treatments and exercise, and reported both high heterogeneity and evidence of small-study effects, the pattern that usually means the true effect is smaller than the pooled one.

Evidence for cognitive behavioural therapy aimed at phones specifically is thin. A meta-analysis of psychological interventions for adolescents could find only six studies and concluded that further randomised trials are needed to establish how well CBT works here.

When to talk to someone

See your GP, or a mental health service if you already have one, if all of these are true for several months:

• Your phone use is costing you something real: work, study, sleep, relationships or money.
• You have tried to cut back, with changes like the ones in the evidence-ranked guide to reducing screen time, and could not.
• It feels less like a choice and more like something you have to do.

Go sooner if you are using your phone to manage low mood, anxiety or something you cannot face. In that case the underlying problem is the one worth treating, and it is usually more treatable than the phone use.

In the UK, the NHS runs a national specialist service for gaming disorder. It covers gaming, not general phone use, so for anything else the route in is your GP. If you are ever in crisis, contact your local emergency services or a crisis line rather than waiting for an appointment.

If it is a habit rather than a disorder

For most people reading this, it will be. That is not a reason to dismiss it: a habit you dislike is still worth changing, and the changes that work are mostly free.

The quiz shows which kind of use you are dealing with in a few minutes, with nothing stored. Why the checking is so hard to stop explains the design behind it, and the guide to reducing screen time ranks what to try by the strength of the evidence behind each.