Introduction
Every Nigerian mobile network — MTN, Airtel, Glo, and 9mobile — has hidden features and USSD codes that most users never explore. These features can help you save money, monitor your data, customize your plan, and even recover lost SIM services.
In this guide, we’ll reveal the top secret features on Nigerian SIMs you probably don’t know about — but should start using today in 2025.
Read also: How to Manage Business Calls Using Multiple SIMs in Nigeria (2025 Guide)
🟡 Secret MTN Features Most Users Don’t Know
1. Borrow Airtime and Data When Broke
MTN allows you to borrow airtime or data instantly when you’re low on balance.
- Dial
*303#→ Select “Borrow Airtime” or “Borrow Data.”
This feature saves you during emergencies — no need to rush out to buy recharge cards.
2. Check Who You Called or Texted Recently
- Dial
*310#(for airtime balance) - Or use
*323#to view your last call or recharge history.
This is useful for tracking usage or confirming if you actually made a call you were charged for.
3. Activate Free Call Me Back Messages
If you’re out of airtime, you can send a “Call Me Back” message for free.
- Dial
*133*recipient number#
You can send up to 5 free messages daily.
4. Data Gifting and Sharing
Instead of recharging your friend’s line, you can share data from your bundle.
- Dial
*312*7*1#→ Select “Data Gifting.” - Or text “Transfer 100 0803xxxxxxx 0000” to 131.
5. Night Browsing & YouTube Streaming Bonus
Most users don’t know MTN offers 1GB Night Plan for just ₦150.
- Dial
*406#→ Choose “Nightlife Bundle.”
You also get free YouTube streaming at night on select data plans.
🔴 Hidden Airtel Features You Should Be Using
1. SmartTalk Tariff — Cheap Calls
Airtel SmartTalk gives 11 kobo/sec calls to all networks after a ₦7 daily access fee.
- Dial
*315#to activate.
Perfect for businesses and frequent callers.
2. Airtel “Who Called” Feature
If your phone is switched off or out of coverage, Airtel sends you a free SMS of all numbers that tried to reach you.
- Dial
*321#→ Select “Missed Call Alerts.”
3. Data Roll-Over Feature
Unused data doesn’t have to expire — Airtel allows data rollover when you renew your bundle before expiry.
- Dial
*312#to buy and renew before expiration.
4. Airtel Family & Friends
Add up to 5 numbers to enjoy cheaper call rates to them.
- Dial
*311*2*number#to add a contact.
5. Free Facebook Access
When you run out of data, Airtel allows limited text-only Facebook browsing free via Free Facebook Mode.
- Just open facebook.com in your browser and switch to “Free Mode.”
🟢 Secret Glo Features Most Users Don’t Know
1. Borrow Airtime or Data
- Dial
*303#→ Choose “Borrow Credit” or “Borrow Data.”
You’ll be charged later when you recharge.
2. Glo Me2U — Share Airtime Instantly
- Dial
*131*recipient number*amount*PIN#
This allows you to transfer airtime to any Glo number instantly.
3. Glo Campus Booster
If you’re a student or staff on a university campus, this feature boosts your data and airtime by 100%.
- Dial
*777#→ “Campus Booster.”
It’s perfect for students in campuses like OAU, UNILAG, and UI.
4. Glo Free Data Day
Glo rewards loyal users with free browsing days.
To qualify, make at least ₦250 calls or use 100MB of data within a week.
You’ll get an SMS alert when your free data day arrives.
5. Data Gifting
- Dial
*777#→ “Data” → “Gift Data.”
You can send data bundles to friends or family easily.
🟣 Hidden 9mobile Features You Might Not Know
1. Free Bonus for Calls & Data
9mobile gives 100% bonus on first recharge of the week or new SIM activation.
- Dial
*200#→ “1” to see available offers.
2. Transfer Airtime (EasyCredit)
- Dial
*223#to borrow or transfer airtime instantly.
9mobile calls it “EasyCredit.”
3. Caller Tunes & Business Jingle Lines
You can customize your caller tunes to play your business advert or promo while people call you.
- Dial
*323#→ Select “Business Tunes.”
This turns your incoming call into free marketing.
4. 9mobile Smartpaks
For heavy WhatsApp, YouTube, or Instagram users — Smartpaks help you buy app-based bundles.
- Dial
*343#→ “SocialPak” or “VideoPak.”
5. Check Who Called You
9mobile also provides Missed Call Alerts when your phone is off or network fails.
- Dial
*282#or contact customer care to activate.
⚙️ Bonus: Universal Hidden Features for All Networks
✅ Check Your Own Number:
- MTN:
*663# - Airtel:
*121*3*4# - Glo:
*135*8# - 9mobile:
*248#
✅ Check NIN Linking Status:
- Dial
*996#(works across all networks)
✅ Customer Care Numbers:
- MTN – 180
- Airtel – 111
- Glo – 121
- 9mobile – 200
💡 Final Thoughts
Every SIM card in Nigeria comes with powerful hidden features that can make your daily usage smarter, cheaper, and more efficient.
From MTN’s free YouTube nights to Glo’s Campus Booster and Airtel’s SmartTalk, knowing these secrets gives you more control over your airtime and data.
Try out these tips today — and unlock the full potential of your mobile network in 2025.