How to Set MTN Daily Data Limit for Kids (App + USSD Methods) in 2025

Keeping your child’s internet usage in check is easier than ever in 2025. MTN Nigeria now offers tools that help parents set daily data limits, track usage, and prevent excessive browsing or streaming on their kids’ lines.

Why Set a Daily Data Limit for Your Child?

Prevent binge-watching, gaming, or endless social media use
Encourage study time and healthy device habits
Avoid unexpected airtime or data depletion
Monitor and guide responsible internet usage

Methods to Set MTN Daily Data Limit in 2025

You can use either MTN's official apps or manual methods via USSD.

Method 1: Using MTN SmartFamily App (Recommended)

Download from Play Store:
👉 MTN SmartFamily App
Register and log in with your parent MTN number.
Add your child’s MTN number under “My Family”.
Under Usage Control, choose:
- Set Daily Data Cap (e.g., 150MB/day)
- Block internet access after usage is exhausted
- Get alerts when limit is close
Click “Apply Limit” — Done!

Parental lock prevents your child from modifying the limit.

Method 2: Using MTN Data Manager USSD Tool

Dial *131*4# or *121# on your child’s phone.
Select Data Manager or Usage Limit Option
Choose “Set Daily Limit”
Enter the desired limit (e.g., 100MB)
Confirm with PIN or prompt

This works for MTN prepaid lines only.

BONUS: Use Google Family Link for Extra Control

Pair MTN controls with Google Family Link (Android) or Apple Screen Time (iOS) to:

Limit app usage (YouTube, TikTok)
Set screen time rules
Block new app installs

Example: What Happens After Limit is Reached?

Plan	Data Cap	Access After Limit
Custom Daily	150MB	Browsing blocked until next day
SmartFamily	200MB	App locks data access after limit
Manual USSD	100MB	No browsing unless limit is increased