Is it bad to sleep with your phone next to you? The real risk

Is it bad to sleep with your phone next to you? Mostly yes. The trouble with a phone on the nightstand is that it can wake you, and it sits within reach when you're half awake and easily tempted. In the best recent study I could find, those two habits had the clearest link to poor sleep. How long people scrolled before bed made only a small difference.

That points to a fix that has more to do with the room than with willpower. Put Do Not Disturb on a schedule, charge the phone across the room, and let a cheap alarm clock do the waking. Below is what the study found, how far you can trust it, and a setup you can copy tonight.

A study of 1,262 students separated scrolling from waking

The study, published in February 2026 in Frontiers in Psychiatry, surveyed 1,262 medical students in Germany, Austria, Hungary and Japan. Their average ages were 21 to 24. What makes it useful is that it asked about several night-time habits separately, instead of lumping everything into "screen time".

After adjusting for other factors, two habits stood out. Students who used a screen after waking in the night had about 1.7 to 1.8 times the odds of poor sleep. Students who were woken by calls or notifications had 1.45 times the odds if it happened occasionally, and 2.35 times if it happened often.

Screen time before bed barely moved the needle by comparison. Each extra 10 minutes came with only slightly higher odds, and the paper's text and tables disagree on the exact figure, so I'll just call it small. Smartphone addiction scores added nothing once the night-time habits were counted.

Almost everyone scrolls before bed, but few are woken by their phone

Some context helps here. Between 96% and 98% of the students used a screen in the hour before bed, usually for about 30 minutes, stopping 5 to 10 minutes before sleep. If pre-bed scrolling were the main villain, nearly everyone in the study would be sleeping badly for the same reason.

Being woken by the phone was much rarer. Between 76% (Hungary) and 86% (Japan) said it never happened, and only 2% to 7% were woken once a week or more. Using a screen after waking in the night was more common: 12% to 25% did it at least once a week.

So the habits most linked to poor sleep belong to a minority. If you're in that group, you probably know it already, because you remember the buzz at 2 a.m. or the half hour you lost to it afterwards.

So is it bad to sleep with your phone next to you? It depends on what it can do

A phone that is silenced and out of reach is a fairly inert object. A phone that can light up, buzz, and be grabbed without sitting up is a different thing. The study suggests the second setup is where the risk sits.

I've written separately about what happens when you check your phone in the middle of the night. This post is about the step before that: where the phone sits, and whether it can wake you in the first place. Most of the fix happens before you're asleep.

The radiation worry is a question this study can't answer

Plenty of people searching this are worried about phone radiation while sleeping. The study I'm relying on didn't measure radiation at all, so I won't pretend it settles that debate, and I'd rather not summarise a separate body of research from memory.

The practical upshot is reassuring either way. The setup below moves the phone across the room or out of the bedroom, which deals with the sleep problems the study did find and puts distance between you and the device. You don't need to resolve the radiation question to act tonight.

A four-step bedroom setup you can copy tonight

1. 01
   Schedule Do Not Disturb

   Turn on Sleep Focus (iPhone) or Bedtime mode (Android) to start automatically, allowing calls only from favourites or repeat callers so real emergencies still get through.

2. 02
   Charge it across the room

   Put the charger somewhere you'd have to get out of bed to reach, or outside the bedroom entirely, so checking at 3 a.m. takes a walk instead of a reflex.

3. 03
   Buy a basic alarm clock

   A cheap one means your phone no longer has a reason to be by the bed, and a sunrise lamp is an optional extra.

4. 04
   Go easy on the pre-bed rules

   Don't stress about cutting every last minute of evening scrolling, since that effect was small in this study and getting the phone out of reach matters more.

On the alarm clock: the same paper cites an earlier programme for medical students that paired a sunrise alarm clock with taking devices out of the bedroom. I haven't been able to check how large that study was, so treat it as a sensible idea that someone tried, rather than proof.

This was a one-time survey of medical students, so hold it loosely

The evidence here is moderate at best. It was a single snapshot, so it shows links, and it can't show that the phone caused the poor sleep. People who already sleep badly might simply be more likely to wake up and reach for their phone.

The authors wrote their own screen-use questions and didn't validate them, answers were self-reported, and only 13% to 37% of invited students responded. Everyone was a medical student in their early twenties, and the authors themselves describe the links as mostly small. The "up to 2.35 times" figure also has a wide margin of error. Still, the advice it points to is cheap and low-risk, which makes it easy to try. Teenagers seem to show a similar pattern, and I've covered the case for a 10 p.m. phone cutoff for teens separately.