Buying mobile data in Nigeria now starts with the harmonised data-plan code on supported MTN, Airtel, Glo and 9mobile lines. This guide shows how to dial the code from the intended SIM, read the current plan categories, compare price, validity and data allowance, choose a payment method and wait for a confirmation message before browsing. It also explains how to
Use the harmonised data-plan menu for Nigerian mobile networks.
What to dial first
| Need | Code or route | Use it for |
|---|---|---|
| All networks | *312# | Open data plan menu |
| Customer care | 300 | Ask provider support if purchase fails |
| Provider app | Official MTN/Airtel/Glo/9mobile app | Buy data with clearer plan details |
Step-by-step
- Dial *312# from the SIM you want to buy data on.
- Press call and wait for the data menu.
- Choose the plan category shown on your screen.
- Read data size, price, validity and auto-renewal note.
- Confirm only if the details are correct.
- Check data balance after purchase.
Expected result
You should receive an SMS or screen confirmation showing the data plan and validity.
Alternatives
Use provider app, bank app, wallet, recharge vendor or official website.
Common errors and fixes
- No menu: check signal and SIM.
- Wrong plan: contact provider quickly; reversal is not guaranteed.
- Debited without data: save SMS/reference and report.
The NCC harmonised short code list identifies *312# for data plans.
Quick data-buying answer
To buy data, use your network official data menu, provider app or verified recharge channel. The harmonised short code for data plans across Nigerian mobile networks is commonly presented as *312#, but plan names and prices can change, so confirm on the provider menu before payment.
Why data buying needs attention
Data plans change often. A plan that was good last month may be replaced, renamed or limited to a special offer. Users also mix up daily, weekly, social, night and monthly plans. That is why the safest approach is to read the confirmation screen before approving payment.
Students, remote workers, traders and drivers rely on data for messaging, maps, payments and business. Buying the wrong plan can disrupt work. Nigeria USSD Codes explains the process but encourages users to confirm final prices and validity on official provider menus.
What to check before buying data
Know whether you need a daily, weekly or monthly plan. Check your current balance first if you are not sure. Some providers also offer bonus plans with restrictions, so read whether the data works for all apps, night use, social apps or selected services.
Use official network menus, official apps or trusted recharge channels. Avoid links that promise unrealistic free data or ask for OTP, NIN or bank details. Telecom support does not need your bank PIN to sell a data plan.
A careful way to buy data
The exact screens differ by provider, but this flow keeps the purchase clear.
- Dial the official data-plan menu or open the provider app.
- Choose the plan category that matches your need.
- Read the data size, price and validity period.
- Confirm whether the plan is auto-renewal or one-off.
- Approve only when the amount and validity are clear.
- Check data balance after purchase and save the SMS if there is a problem.
If a plan fails after you are debited, save the message and contact the provider through official customer care.
USSD data purchase compared with app purchase
| Channel | Best for | Advantage | Caution |
|---|---|---|---|
| USSD menu | No-data situations | Works without internet | Menus may time out |
| Provider app | Smartphone users | Shows plan details clearly | Needs internet or app access |
| Bank app | Buying with bank balance | Useful when airtime is low | Confirm phone number before payment |
| Recharge vendor | Cash purchase | Helpful offline | Keep receipt if available |
Three data-buying examples
The following examples explain three data-buying examples and show how the guidance applies in different situations.
1. Student buying a weekly plan
A student who attends online classes should choose a plan with enough validity and all-app access. A cheap social-only plan may not work for video classes.
2. Trader buying customer-service data
A trader who uses WhatsApp for orders may choose a smaller daily plan, but should check whether auto-renewal is turned on to avoid surprise deductions.
3. Driver using maps
A driver may need data for maps and ride apps. The driver should avoid night-only plans that will not help during the day.
Avoid fake free-data traps
Be careful with messages that promise free data if you click a link, submit an OTP or invite friends. Some are phishing attempts. Use official provider apps, USSD menus and websites.
For telecom service rules and harmonised code guidance, use the NCC and official MTN, Airtel, Glo or 9mobile channels.
Data purchase FAQs
The following examples explain data purchase FAQs and show how the guidance applies in different situations.
Can I buy data without internet?
Yes, USSD menus are designed for that. You still need network signal and enough airtime or linked payment method.
Why did my data finish quickly?
Video, app updates, hotspot sharing and background apps can use data quickly. Check phone data settings.
Can I reverse a wrong data purchase?
Reversal is not guaranteed. Contact your network provider quickly with the transaction details.
Should I use third-party cheap-data links?
Use caution. Prefer official provider or trusted payment channels and avoid sites asking for sensitive details.
Buy the plan that fits the job
The best data plan is the one that matches your use, not always the cheapest one. Read validity, access type and auto-renewal before approving.
Use the Network Finder and report changed menus through Support.
Verification record
- Last fact-check
- July 18, 2026
- Method
- Official provider or regulator sources reviewed where available; live menus control account-specific actions.
- Reviewed by
- Nigeria USSD Codes Editorial Team
Primary official sources:
Article note
Last reviewed: July 18, 2026. This independent guide is informational and does not replace instructions from your bank, telecom provider, regulator, or service provider. Verify sensitive actions through an official channel before sending money or sharing information.