Average screen time by age: what the numbers actually say

The honest answer: most of the "average screen time by age" tables online are unsourced, or trace back to small marketing surveys quoted so many times the origin has vanished. A few findings hold up — American teens average over eight hours a day of entertainment screen use, and one study measured people touching their phones thousands of times a day — but the averages are blunter and less reliable than the headlines suggest. And the average was never really the point. Your own number is.

Where the viral numbers come from

Search for screen time statistics and you'll find neat tables: so many hours for 18 to 24, a little less for 25 to 34, and so on down to a suspiciously tidy figure for retirees. Follow the links and they usually lead to another blog, which cites another blog, which cites a panel survey run by an ad platform years ago — if the trail doesn't simply go cold.

There's a deeper problem underneath the sourcing: most of those figures are self-reported, and people are poor witnesses to their own phone use. When researchers compare what people say against what devices actually log, the estimates miss by wide margins in both directions. A table built on guesses, averaged, is still a guess.

What the careful sources actually say

Two sources are worth trusting more than the rest. Common Sense Media runs a recurring census of media use among American tweens and teens, with a published methodology. Its 2021 edition found teens averaging over eight hours a day of entertainment screen use — and that figure excludes school and homework. It was a pandemic-era measurement, which the report itself flags, but the direction and scale are consistent with its earlier editions.

The other is a 2016 study by the research firm dscout, which skipped self-report entirely and instrumented volunteers' phones. Participants touched their phones an average of 2,617 times a day; the heaviest users were near 5,400. That study says nothing about hours by age, but it says something more interesting: most phone use isn't a decision. It's a reflex, repeated thousands of times, mostly invisibly.

Why "by age" tables mislead

Even honest surveys struggle to compare across ages, because "screen time" isn't one thing. A 60-year-old's three hours might be maps, podcasts, and messages from grandchildren. A 20-year-old's three hours might be one uninterrupted feed. Definitions differ between studies, self-report drifts, and averages hide the distribution — a mean can be dragged upward by a heavy-scrolling minority while the median person looks moderate. Knowing your cohort's average tells you almost nothing about what your own hours are costing you.

Is a high number automatically bad?

Not by itself. Przybylski and Weinstein tested what they called the Goldilocks hypothesis on a very large sample of adolescents and found that moderate screen use was not intrinsically harmful — the measurable downsides appeared at the high extremes, and even there the effects were smaller than the public conversation implies. The better question isn't "am I above average?" but "what are these hours displacing?" Sleep, exercise, people, the things you keep meaning to do — that's where the real cost shows up, and no age table can see it.

Your own number matters more

You don't need a survey; your phone already keeps the measured answer. On iPhone, Screen Time (in Settings) shows your daily and weekly totals, your most-used apps, and how often you pick the phone up. Android's Digital Wellbeing does the same. Look at a full week rather than a single day, then ask two questions: what did those hours cost, and what would you rather they bought? If the answer stings a little, that's useful information, not a verdict — and there are practical ways to bring the number down.

• Common Sense Media (2021). The Common Sense Census: Media Use by Tweens and Teens.
• dscout (2016). Mobile Touches: a study of how often people touch their phones.
• Przybylski, A. K. & Weinstein, N. (2017). A Large-Scale Test of the Goldilocks Hypothesis. Psychological Science.