How much screen time is too much for adults? There isn't one official number. WHO sets screen-time limits for children under 5, while its adult guidance focuses on moving more and sitting less. In practice, screen time is too much when it pushes out your sleep, activity, work or time with people. Here's how to check yours.
The World Health Organization (WHO) does publish maximum screen times, but in its guidelines for children under 5. For adults, its guidance doesn't name a number of screen hours. Instead, WHO says any amount of physical activity is better than none, all age groups should limit the time they spend sedentary, and adults should aim for at least 150 minutes of moderate-intensity physical activity a week.
WHO defines sedentary behavior as any time awake when you use very little energy, such as sitting, reclining or lying down, and notes that lives are becoming more sedentary partly through the use of screens for work, education and recreation. In adults, it links higher amounts of sedentary behavior with higher rates of cardiovascular disease, cancer and type 2 diabetes, and with higher death rates. Those are associations seen across many people, not proof that any one hour on your phone causes harm.
Sleep is the other big piece. The CDC says adults aged 18 to 60 need 7 or more hours of sleep a night, and its list of healthy sleep habits includes turning off electronic devices at least 30 minutes before bedtime.
Eight hours of screen time could be a full workday at a computer plus a video call with family. It could also be five hours of scrolling that started at 11 p.m. Those aren't the same. Ask four questions instead:
What does it replace? This is the big one. Screen time that pushes out sleep, exercise, meals with people or focused work costs more than screen time that fills a train ride.
When does it happen? Screens in the last half hour before bed cut against the CDC's sleep advice. Long, unbroken sitting sessions cut against WHO's advice to sit less.
What kind is it? Work, learning, keeping in touch and passive scrolling are different things. Notice which ones leave you feeling better and which leave you feeling worse.
Do you choose it? If you often pick up your phone without deciding to, or keep going long after you meant to stop, the habit is in charge.
Answer yes or no for a typical week:
Do I usually get 7 or more hours of sleep a night?
Do I put screens down at least 30 minutes before bed?
Do I get at least 150 minutes of moderate physical activity?
Do I break up long stretches of sitting?
Do I spend unhurried, screen-free time with people I care about?
Do I usually stop scrolling when I meant to?
Each "no" points to where your screen time may be too much for you. That's your real target, rather than a magic number of hours.
These steps are for iOS 27. On older versions, some menu names may be different.
Open Settings and tap Screen Time.
If it isn't on yet, tap Manage Screen Time, then tap Turn On App & Website Activity. Give it a few days to collect data.
Tap Daily Average. Tap Week for a weekly summary, or Day for a single day.
Scroll down to Pickups and Notifications to see how many times you picked up your phone and how many notifications you received.
To see combined use across your iPhone, iPad and Mac, tap Manage Screen Time and turn on Share Across Devices.
You can also tap the Screen Time Weekly Report notification when it appears. When you read the report, look past the total. Which apps take the most time? How many pickups a day? How much of it is leisure rather than work? That's where your personal limit comes from.
Separate work from leisure. Set your limit on leisure screen time. For work screens, WHO's advice to sit less still applies, so build in breaks to stand up and move.
Start from your baseline. Take your current weekly average and cut leisure use by a modest amount, such as 30 minutes a day. Small cuts are often easier to keep than drastic ones.
Protect sleep first. Set a screens-off time 30 minutes before bed, in line with the CDC's sleep habits.
Swap, don't just subtract. Replace one block of scrolling with something from your self-check, like a walk or a call with a friend.
Use the built-in tools. In iOS 27, go to Settings, then Screen Time, then Time Allowances to set how long you can use categories like Entertainment, Games or Social Media each day. A Screen Time Schedule sets when they're available. Our guide to screen time limits on iPhone walks through both.
Review weekly. Check your report each week and adjust. If you kept your limit easily, tighten it a little. If you blew through it every day, make it more realistic.
Here's an example you could adapt. It's a starting point, not a medical recommendation: "Leisure screens up to 90 minutes on weekdays and 2.5 hours on weekend days, none in the 30 minutes before bed, and a walk at lunch."
This is general information, not medical advice. Talk to your doctor or pharmacist about your own situation.
Consider talking to a doctor or a mental health professional if you can't cut back despite really trying, if screen use is hurting your sleep, work or relationships, or if you feel anxious, low or irritable whenever you're away from your phone. See a doctor too about ongoing trouble sleeping, or eye strain and headaches that don't ease when you cut back.
It depends on what those hours include. If most of it is work and you still sleep 7 or more hours, stay active and spend time with people, it may be fine. If it's mostly leisure and it pushes those things out, it's probably too much for you.
Your iPhone report counts all of it. For your health, WHO's advice to limit sedentary time applies at work too, so take regular breaks to stand and move.
The CDC lists turning off electronic devices at least 30 minutes before bedtime among its healthy sleep habits. A set screens-off time is a simple place to start.
Go to Settings, tap Screen Time, then tap Daily Average. Choose Week or Day, and scroll down for Pickups and Notifications.
Time Debt: Screen Time lets you pick distracting apps, categories and websites with Apple's picker, set separate weekday and weekend daily limits, and shields those apps when the day's allowance runs out. If you need a little more, you can borrow 5, 10, 15 or a custom number of minutes within a cap, repaid automatically from tomorrow's time with no interest. Your rules, app selections and history stay on your device, and an emergency access option removes all Time Debt shields until tomorrow at no cost.
Get Time Debt free on the App Store