What happens when you cut your screen time?

When you cut your screen time, the research suggests three things tend to happen within a few weeks: your mood lifts a little, your attention steadies, and the time you get back drifts towards people, movement and the outdoors. None of it is magic, and the effects in most trials are modest. But they are real, they come from randomised trials rather than surveys, and they show up quickly.

This page is about what changes. If you want the method, our guide to doing a digital detox covers how to plan one that lasts.

Does cutting screen time actually help?

Yes, in most of the trials that have tested it properly. The clearest recent example is a 2025 study in PNAS Nexus. Researchers randomly assigned 467 smartphone users to have all mobile internet blocked on their phones for 2 weeks, either straight away or later, while keeping calls and texts and their computers. The intervention improved mental health, subjective well-being and an objective measure of sustained attention, and 91% of participants improved on at least one of those outcomes.^[1]

Two caveats belong right next to that figure. First, sticking to the block was hard: only 119 people, about a quarter of those who committed to taking part, met the researchers’ preregistered definition of compliant, which was keeping it on for at least 10 of the 14 days.^[1] Second, the participants volunteered for a study about phones, so they may have been unusually keen. The improvements appeared anyway, which is encouraging, but you should expect it to feel harder than it sounds.

What are the benefits of using your phone less?

Three turn up again and again: better focus, a lighter mood and more offline life.

Better focus. In the 2025 trial, the improvement in sustained attention was about the same size as the decline normally seen over 10 years of ageing, and average daily screen time in the intervention group fell from 314 minutes to 161.^[1] That is roughly two and a half hours a day handed back.

A lighter mood. The same trial found improvements in mental health and well-being.^[1] An earlier trial, from 2018, randomly assigned 143 university students either to limit Facebook, Instagram and Snapchat to 10 minutes per platform per day, or to carry on as normal, for three weeks. The limited group reported significant reductions in loneliness and depression compared with the control group.^[2]

More offline life. The 2025 researchers found that part of the benefit was explained by how people spent their time: without mobile internet, they spent more time socialising in person, exercising and being in nature.^[1] A large 2020 experiment in which people deactivated Facebook for four weeks before the 2018 US midterm elections found the same pattern: less time online, more time on offline activities including seeing friends and family, and higher subjective well-being.^[3]

What are the benefits of not doomscrolling?

Three, and mostly the same ones, because doomscrolling is the part of screen time these trials cut first. The 2018 study targeted social feeds specifically, and its gains in loneliness and depression came from limiting them rather than from giving up the phone.^[2] The Facebook experiment found one more effect worth knowing: people who stepped away became less politically polarised.^[3]

There is also a small trade-off. The same experiment found that deactivating Facebook reduced people’s factual news knowledge.^[3] You do not have to choose between being informed and being calm, but it helps to replace the feed with something deliberate, such as a daily news summary read once, rather than with nothing. Our guide on how to stop doomscrolling has practical ways to do that.

Does a digital detox always work?

No. A 2022 systematic review gathered 21 studies of digital detox interventions, with 3,625 participants in total, 12 of them randomised controlled trials. The effects varied across studies on health and well-being, relationships, self-control and performance: some found positive effects, others found no effect, and some even found negative consequences for well-being.^[4]

The review’s authors concluded that more research is needed on the mechanisms of change, in other words on how and why a detox works when it does, before anyone can say which designs reliably help.^[4]

The mixed results also make sense when you think about what a detox takes away. Phones carry the useless and the precious in the same pocket. Cut both and you may lose contact with people who matter or feel out of the loop, which can outweigh the calm. The trials with the clearest benefits tended to cut the compulsive parts, the feeds and the always-on browsing, while leaving calls, messages and a computer in place.^[1][2]

Is it worth it?

Yes, for most people, as a short, deliberate experiment. The research points to a simple design:

• Cut the compulsive, keep the useful. Target feeds and mobile browsing first, not your ability to call your mum.
• Give it two to four weeks. That is how long the main trials ran before measuring results.
• Plan the replacement. The benefits seem to travel through what you do instead, especially people, movement and outdoors, so decide what that is before you start.
• Expect it to be hard. In the 2025 trial, most people did not manage the full block. Partial counts.

This is general information, not medical advice. If low mood or anxiety are with you most days, please talk to your GP as well as to your phone settings.

If you want a structured way to decide which apps earn their place, our Anti-Algorithm Audit walks through it one app at a time.