Phones and Screen Time: How Much Is Too Much for Nigerian Children?

"Put that phone down!" If you've said it this week, you're not alone. Phones are everywhere in Nigerian homes now, and many parents worry about what they're doing to their children.

So how much is too much? Here's what the experts and the research really say, in plain words.

Children are online younger than you think

In a 2020 NCC survey of 5,681 Nigerian children aged 4 to 16, 93% of the 11 to 16-year-olds and 45% of the 4 to 10-year-olds said they went online with their own mobile phone.

That survey wasn't of every Nigerian child. It leaned towards boys, cities and schools. But it shows how early phones arrive in many homes.

The rules for under-5s are clear

For young children, the World Health Organization gave clear limits in 2019:

• Under 1 year: no screen time.
• Age 1: no sitting screen time.
• Ages 2 to 4: no more than 1 hour a day, and less is better.

When small children are sitting still, WHO encourages reading and storytelling with a parent or carer instead.

Why so strict? A 2023 Japanese study of 7,097 mothers and children found that babies who had 4 or more hours of screens a day at age 1 were more likely to have delays in communication at age 2. It found a link, not proof of cause, but it's a good reason to be careful with babies.

For older children, it's not just about hours

For school-age children and teenagers, doctors have changed their thinking. In January 2026, the American Academy of Pediatrics (AAP) released new guidance. It moves beyond simple time limits and focuses on what children do on screens, when, and whether it pushes out sleep, play, homework and family time.

A 2025 American study of 4,285 young people pointed the same way. It found that addictive use of phones and social media, like not being able to stop, was linked to worse mental health. The total number of hours at the start wasn't.

So the question isn't only "how long?" It's also "doing what, and instead of what?"

Phones and sleep

This is one of the clearest findings. A 2023 US study of 10,280 children aged 10 to 14 found that having a TV or internet device in the bedroom was linked to more trouble falling or staying asleep, about 27% higher risk. Leaving the phone ringer on at night was also linked to more sleep problems.

A follow-up study found that phones in the bedroom and ringers left on predicted less sleep a year later.

A tired child finds it harder to learn. That's why the bedroom is the best place to start.

Phones and school

Across the world, phones are a big distraction in class. The OECD's 2024 report on its PISA tests of 15-year-olds found:

• 65% of students were distracted by their own phones or devices in at least some maths lessons. By our sum, that's about 2 in every 3.
• Students who used devices for fun for up to an hour a day at school scored 49 points higher in maths than those who used them for 5 to 7 hours, even after accounting for family background.

Nigeria doesn't take part in PISA, so this is evidence from other countries. And it's a link, not proof that phones caused the lower scores.

UNESCO says it can take a student up to 20 minutes to refocus after a distraction. By our sum, if three phone buzzes interrupt an evening of homework, that could cost up to an hour of real focus.

Can cutting back help?

A 2024 trial in Denmark asked 89 families to cut children's leisure screen time to 3 hours a week or less for just two weeks, with phones and tablets handed in. By our sum, that's under half an hour a day. The children's behaviour scores improved compared with families who carried on as normal.

It was short and small, and the researchers say we don't know the long-term effects. But it shows change can happen fast.

Schools are acting too

In 2023, UNESCO said fewer than a quarter of countries banned phones in schools. By 2026, it counted 58% of countries with bans. By our sum, that's more than double in under three years.

Nigeria is following. In March 2025, Anambra State allowed teachers to seize phones from secondary students, and in September 2026, Benue State banned phones in school hours unless they're allowed for learning.

But a ban alone isn't magic. A 2025 English study of 1,227 pupils found strict school phone rules cut phone time in school by about 40 minutes a day, but didn't change pupils' total phone use or wellbeing. What happens at home matters just as much.

What parents can do

1. Charge phones outside the bedroom. This is the single easiest change, and the sleep research backs it up.
2. Make meals phone-free. For everyone, including you.
3. Turn the ringer and notifications off at night and during homework.
4. For under-5s, follow WHO's limits. Read, sing, play and tell stories instead.
5. Watch and play together. Know the apps, games and videos your child uses.
6. Look at what screens push out. Is your child still sleeping, playing outside, reading and doing homework?
7. Set rules together. The AAP suggests making a family media plan, with everyone agreeing the rules.
8. Lead by example. Children copy what we do, not what we say.

There's no proven "right age" for a first phone. Think about your child's maturity and needs, not just their age.

On Scholarleveling, parents get a code to see their child's learning progress every week, so you can see whether screen time is helping or hurting.

Read next: the right way for children to use AI, or what AI is doing to children's thinking.