Ever noticed your data bundle disappearing faster than usual, even when you’re sure you didn’t stream movies or watch Instagram reels for hours? Sometimes it’s not MTN/GLO/Airtel that’s after your life. Someone might be secretly sharing your data with you.
Let’s walk through how you can check if someone else is using or sharing your mobile data on MTN, Airtel, and Glo and what signs to look out for.
What Does “Sharing Data” Even Mean?
On some networks, especially Glo, there’s a feature that allows you to share your data bundle with other numbers. It’s useful when you want to help a friend or family member stay connected to the internet. But if someone gained access to your phone, SIM, or PIN, they could activate sharing without your knowledge. 
On MTN and Airtel, it is not the traditional “sharing.” Instead, someone might be linked to your account, using your hotspot, or accessing your network app. That’s why monitoring your account and phone matters.
Signs Someone Else Might Be Using Your Data
Before telling you specific network settings, here are common ways to know someone is sharing your data with you:
- Your data balance drops suddenly or much faster than usual.
- Data drains overnight even when you weren’t actively using your phone.
- Your phone’s data tracker shows high usage for apps you didn’t open.
- You receive unexpected data usage alerts.
If you have noticed any of these, it’s time to think again, better still, read on to find out how to deal with it.
ALSO READ: Why MTN Nigeria Is Paying More People ₦29.5m a Year
MTN
MTN offers a data sharing feature, but it’s structured differently. To check linked numbers to data:
- Dial *321# and navigate to Data Sharing, then select View Users.
- Or send “LIST” to 131 to receive details via SMS.
- Check the MyMTN App, if you see a number you don’t recognize, you can remove it through the app or contact MTN customer care on 300 for assistance.
Make sure your MyMTN app login details are known to only you.
Glo
Glo makes it easy to confirm whether your data is being shared. To check the numbers currently sharing your data:
- Dial *127*00# to see a list of all numbers sharing your data.
- Or you can send “LIST” to 127 via SMS.
- You can also use the Glo Café app to view and manage shared numbers.
- If you find a number you didn’t authorize: Dial *127*02*number# to remove said number. Or send “REMOVE” to 127.
- You can also remove users directly in the Glo Café app.
It is also a good idea to check the app regularly if you have ever shared data before.
Airtel
It’s not straightforward to find out Airtel ’s data sharing system via USSD, but you can still monitor your account.To check if someone is doing so:
- Dial *121# and go to My Account to look for data sharing or linked numbers (menu options may vary).
- Use the MyAirtel App to review account details.
- Contact Airtel customer care on 300 to confirm whether any numbers are linked to your data.
If you notice any unknown access, call the customer care line so they can help you reset settings or remove linked numbers.
Additional Ways to Protect Your Data and Make it Last
Regardless of your network these steps can help:
- Keep your SIM, PIN and mobile app passwords private.
- Avoid sharing your phone for long periods without supervision.
- Turn off your hotspot when nobody around is connected.
- Regularly monitor your data usage through your network’s official app.
- Go to your phone’s setting and turn off background apps using data.
Conclusion
If your data seems to be disappearing too quickly, don’t ignore it. Each network, MTN, Airtel, and Glo provides ways to check whether your data is being shared or linked to other numbers. A few quick checks could save you money and prevent further misuse.
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