Teen Screen Time: How Much Is Too Much, and How to Respond Without Conflict

In France, teenagers aged 13 to 17 spend an average of nearly 7 hours a day on screens outside of school. If you're a parent, that number probably doesn't surprise you. The real question is elsewhere: at what point should you worry — and above all, how do you respond without every evening turning into a fight?

How much screen time is “too much”?

There's no universal threshold. An hour of video calls with friends doesn't have the same effect as three hours of passive scrolling. Rather than fixating on a number, watch for the warning signs:

• sleep that's getting worse (late bedtimes, phone in bed);
• irritability the moment screens go off;
• homework and off-screen activities falling by the wayside;
• “reflex” use, with no real intention, the second there's a spare moment.

When several of these signs settle in, it's no longer about hours: it's about balance.

Why willpower isn't enough

Apps aren't neutral. They're built by teams whose entire job is to hold your attention for as long as possible. Asking a teen to “make an effort” against years of engagement engineering is a losing battle. It's not a lack of discipline: it's an unfair fight.

What doesn't work (or barely does)

• Confiscating the phone: effective for five minutes, but it creates conflict and just shifts the problem elsewhere.
• The built-in Screen Time settings: a teen can bypass them in a few taps. We explain why here.
• Promises (“I'll stop in 5 minutes”): they never hold, because the app is always within thumb's reach.

What works: clear rules + real friction

Two levers work well together. First, simple rules agreed on together: no screens at mealtimes, phone out of the bedroom at night, dedicated homework slots. Then — and this is what makes the difference — add physical friction that makes access less automatic.

That's the idea behind Lock-IN, the anti-distraction box we make in France. The lock depends on a physical object: until it's scanned, the chosen apps stay inaccessible — impossible to bypass from the phone. With parent mode, you manage and unlock remotely, without spying on their messages, and your child always keeps calls and GPS.

The goal: replace conflict with a ritual

The point isn't surveillance — it's turning a daily battle into a calm habit. When the boundary is set by an object rather than a repeated “no”, the relationship relaxes.

Discover Lock-IN parent mode →

Also worth reading

If you also have younger kids: screens and kids, the age-by-age guide (0-11), which walks through France's official recommendations. If focus is a topic at home: ADHD and screens, what the science says. And to see how your family compares to the average: all the screen time numbers for 2026.