How much data do children actually use?
Children's mobile data usage varies enormously by age and habits. Younger children mostly use YouTube and simple games, while older kids add social media, streaming, and more demanding online gaming to the mix.
The biggest surprise for most parents is how quickly data adds up — especially video. Here's a breakdown by activity:
| Activity | Data per hour | 1hr/day monthly |
|---|---|---|
| YouTube (HD) | ~1GB | ~30GB |
| TikTok / Reels | ~800MB | ~24GB |
| Netflix / Disney+ | ~1.5GB | ~45GB |
| Online gaming | ~300MB | ~9GB |
| Social media | ~200MB | ~6GB |
| School apps | ~100MB | ~3GB |
A child who watches one hour of YouTube and plays games for an hour per day uses roughly 39GB per month on mobile data alone.
Average data usage by age
| Age | Typical monthly usage | Main activities |
|---|---|---|
| 6–9 years | 2–5GB | YouTube Kids, simple games |
| 10–12 years | 5–15GB | YouTube, gaming, school apps |
| 13+ years | 15–50GB+ | TikTok, YouTube, gaming, social media |
Why unlimited data is the safest choice for kids
With a capped plan, one unexpected event can ruin the month — a game downloading an update, a school project that requires video streaming, or a sleepover where the kids watch films all night.
Unlimited data removes all of that risk:
- No bill shock. The price is the same every month, no matter how much data is used.
- No monitoring needed. Parents don't need to check usage or set alerts.
- No arguments. Kids can't accidentally go over their allowance.
- Future-proof. As children get older, they use more data. Unlimited scales with them.
Capped plan vs unlimited — which is cheaper?
| Plan type | Typical cost | Bill shock risk | Best for |
|---|---|---|---|
| 10GB capped | £10–15/mo | Very high | Very light users only |
| 30GB capped | £20–25/mo | Medium–high | Light to moderate users |
| Unlimited (Chattr) | £20 → £15/mo | None | All children |
Chattr starts at £20/month — the same as many 30GB plans — but drops to £15 at month 12 with no contract and no exit fees.
Tips to manage your child's data usage
- Connect to Wi-Fi at home. Most children's data usage should happen on home Wi-Fi, not mobile data.
- Download YouTube videos in advance. YouTube allows offline downloads — great for car journeys.
- Set streaming quality to SD. Standard definition looks fine on a phone screen and uses 3x less data than HD.
- Update games on Wi-Fi only. Disable mobile data updates in the App Store or Google Play settings.
- Choose unlimited. The simplest solution — no monitoring, no surprises, no bill shock.
Frequently asked questions
A child aged 6–9 typically uses 2–5GB per month. Children aged 10–12 can use 5–15GB. By age 13, usage often exceeds 15–20GB per month once social media and streaming enter the picture.
For very young children with limited screen time, 10GB may be enough. But once kids reach 10–11 years old and start using YouTube and games regularly on mobile data, 10GB runs out quickly. Unlimited is the safer long-term choice.
Depending on the network, the connection either slows to unusable speeds or the network charges for extra data — sometimes up to £10 per GB. This is the most common cause of unexpected phone bills. Unlimited data prevents this entirely.
Yes. A single game download can use 1–3GB and updates can be similar. Always update games on Wi-Fi and disable mobile data updates in the App Store or Google Play settings.
Chattr's unlimited SIM starts at £20/month and drops to £18 at month 7 and £15 at month 12. No contract, no credit check, and no out-of-bundle charges.