Four changes do most of the work, and none of them ask you to delete anything. Block mobile internet while texts and calls keep working. Turn the screen grey. Charge the phone outside the bedroom overnight. Cut notifications back to the ones that are a person talking to you. Then leave it a week before you judge it.
Nobody is going to hand you a diagnosis
"Phone addiction" isn't a recognised condition anywhere. The American Psychiatric Association has a proposed research condition for gaming, and it says plainly that this proposed condition "is limited to gaming and does not include problems with general use of the internet, online gambling, or use of social media or smartphones". It also notes that ["Gambling disorder is the only behavioral addiction (as opposed to chemical substance use disorders) identified in DSM-5-TR"](https://www.psychiatry.org/patients-families/internet-gaming).
That matters for two reasons, and neither is the one you're braced for. It doesn't mean your problem isn't real. It means there's no test to pass or fail, so the only sensible way to judge it is by what it's costing you. Missed sleep. Work you didn't do. The conversation where you looked down.
If you've never actually looked at the number, [start with your own screen time report](/guides/phone_screen/how-much-are-you-actually-on-your-phone) before you change anything. You need a before.
The objection first: you can't just delete
Most advice on this topic assumes you can remove the apps. You often can't. If your friends organise everything in a group chat, deleting the app doesn't cut your scrolling, it cuts you off.
There's a trial that answers this exactly. Researchers used an app to block all mobile internet on people's phones for two weeks, while leaving texts, calls and desktop internet working. Their words: the intervention "specifically targeted the feature that makes smartphones 'smart' (mobile internet) while allowing participants to maintain mobile connection (through texts and calls) and nonmobile access to the internet". The result was that it ["improved mental health, subjective well-being, and objectively measured ability to sustain attention; 91% of participants improved on at least one of these outcomes"](https://pubmed.ncbi.nlm.nih.gov/39967678/). When people lost mobile internet, they "spent more time socializing in person, exercising, and being in nature".
Read that design again. The friction went on the internet, not on your friendships. That's the shape of every good change below.
The four changes
- **Put friction on mobile data, not on people.** You don't need a two week blackout to borrow the idea. Turn mobile data off for the apps that pull you, one by one, in your phone's data settings. Messages and calls carry on. The feed only loads on wifi, which means it only loads in places where you had a choice about being.
- **Turn the screen grey.** It takes thirty seconds in accessibility settings, and most phones let you bind it to a triple-press of the side button so you can flip it back for photos.
- **Move the charger.** Out of the bedroom, into the hall or the kitchen. Buy a cheap alarm clock so the "but it's my alarm" answer stops working.
- **Strip notifications to humans.** Direct messages and calls stay. Everything that is a company trying to get you back goes silent. [More on the checking habit here](/guides/phone_screen/notifications-and-the-checking-habit).
Doing one of these tonight is enough. You don't have to do all four at once.
Be honest, do screen time apps work?
Partly, and less than they promise. A field experiment tested two of the strategies your phone already offers. Grayscale, which the researchers class as design friction, ["led to an immediate, significant reduction of objectively measured screen time compared with the control condition"](https://pubmed.ncbi.nlm.nih.gov/36577008/). Setting yourself a time limit also worked, but the goal-setting version "led to a smaller and more gradual screen time reduction".
Now the half that gets left out of every article about this. In the same study: "In contrast to the popular belief that reducing screen time has broad benefits, we found no immediate causal effect of reducing usage on subjective well-being and academic performance."
So grey screen, fewer hours, measured properly. No promise that you'll feel better by Friday. If someone sold you a limit and you felt cheated when your mood didn't change, that's why, and you weren't doing it wrong.
Limits also have a specific failure mode: you set them, and you're the person who knows the passcode. If that's already happened, [that's a whole problem of its own](/guides/phone_screen/you-undid-all-the-settings-what-now).
Sleep is the strongest thread in the evidence
A review of 20 studies covering 125,198 children found ["a strong and consistent association between bedtime media device use and inadequate sleep quantity"](https://pubmed.ncbi.nlm.nih.gov/27802500/). The odds ratio was 2.17, with a confidence interval running from 1.42 to 3.32.
The finding that should change what you do tonight is the other one. Children who had access to a device at night, without using it, were also more likely to sleep badly. Having it there was enough.
Two honest caveats. Those were cross-sectional studies, so they show an association and can't tell you which way the arrow points. And they were done on children, not on you. Even so, moving the charger costs nothing and undoes itself the moment you want it back, which makes it about the cheapest thing on this page to test.
If you're at thirteen hours a day
Big numbers scare people into big plans, and big plans last a weekend. Pick the hour that hurts most, usually the one in bed, and change only that. Get a week of evidence. Then take the next one.
If it's specific moments rather than whole hours, [work out what the moments have in common](/guides/phone_screen/the-moments-you-reach-for-it) before you add more rules.
And if what you're reaching for is a feed that makes you feel worse every time, that's worth saying out loud to someone. Not to a settings menu. If the low mood is more than a bad week, talk to a GP. In the UK, Samaritans is 116 123, at any hour.
Common questions
**Is phone addiction a real addiction?** It isn't a recognised diagnosis. The American Psychiatric Association says gambling disorder is the only behavioural addiction in the current manual, and the proposed gaming condition explicitly excludes smartphone use. What you're describing can still be doing you real harm, and it's fair to treat it seriously without a label.
**Does grayscale actually reduce screen time?** Yes, and it's one of the few things here with a controlled trial behind it. In that study it cut objectively measured screen time straight away. The same study found no immediate improvement in wellbeing or academic performance from the reduction, so expect fewer hours rather than a different mood.
**Do I have to delete social media to fix this?** No. The strongest trial in this area blocked mobile internet while leaving texts and calls working, so people kept their contacts and lost the feed. Cutting mobile data per app gets you most of that on any ordinary phone.
**Why do I undo my own screen time limits?** Because you hold the passcode, and at 11pm the person deciding is not the person who set it. Limits work best when the block sits somewhere you can't reach in ten seconds, and when there's something specific to do instead.
**Will leaving my phone out of the bedroom help me sleep?** The evidence is an association rather than proof, and it comes from studies of children. It's still consistent enough that having a device within reach at night lines up with worse sleep even when it isn't picked up. It's a cheap thing to try for a week.
Sources
- [American Psychiatric Association, Internet Gaming](https://www.psychiatry.org/patients-families/internet-gaming), for the proposed gaming condition excluding smartphone and social media use, and gambling disorder being the only behavioural addiction in DSM-5-TR.
- [Blocking mobile internet on smartphones improves sustained attention, mental health, and subjective well-being, PNAS Nexus 2025](https://pubmed.ncbi.nlm.nih.gov/39967678/), for the two week blocking trial, the 91% figure, and the design that kept texts and calls working.
- [Digital Strategies for Screen Time Reduction: A Randomized Field Experiment, Cyberpsychology, Behavior, and Social Networking 2023](https://pubmed.ncbi.nlm.nih.gov/36577008/), for grayscale reducing measured screen time and the null result on wellbeing and academic performance.
- [Association Between Portable Screen-Based Media Device Access or Use and Sleep Outcomes, JAMA Pediatrics 2016](https://pubmed.ncbi.nlm.nih.gov/27802500/), for the 20 studies, 125,198 children, and the association between bedtime device use and inadequate sleep.
