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The short answer
Dial *310# to check your Glo airtime balance; it is the NCC's harmonised balance code for every network, in force since 2023. You can also use Glo's Self Care line on 500. Older Glo codes such as *124# are still widely quoted, but we could not confirm them on Glo's own pages in October 2026.
Checking your airtime balance is one of the most common things people do on a phone, and the code has changed. In 2023 the NCC introduced short codes that work the same way on every network, and Glo's older codes are no longer the official route. This guide gives the current code, the alternatives, and fixes for when the check does not work.
The code: *310#
The NCC's harmonised short codes, published on 7 June 2023, set 310 as the universal code for checking balance. The NCC said older network-specific codes would co-exist until 17 May 2023, and the harmonised codes apply across MTN, Airtel, Glo and T2 (formerly 9mobile).
- Open your phone's dialler.
- Dial *310# from the Glo line you want to check.
- Your main balance, and sometimes bonus balances, appear on screen or by SMS.
What about *124#?
*124# was Glo's balance code for years, and many people still use it. We could not find it on Glo's support or homepage in October 2026, so we cannot say whether it still works on every line. If it works for you, it is giving the same information; if it fails, use *310#.
Other ways to check
| Route | How | Notes |
|---|---|---|
| USSD | *310# | Works without data |
| Self Care | Call 500 (5001 English, 5002 Yoruba, 5003 Hausa, 5004 Igbo) | Listed on Glo's support page |
| Customer care | 300, or 0805 002 0121 | For disputes about your balance |
| App | Glo's app, signed in with your number | Glo's pages offer app-based services; the menu changes |
If you are checking a line you do not have with you, you will need to call customer care or use the app; USSD codes check only the SIM you dial from.
When the balance check fails
Messages like "balance unavailable", "connection problem" or "invalid MMI code" usually come from the network or the phone, not your account.
- Check signal. USSD needs network coverage. Move to a spot with better signal and try again.
- Check the code. Make sure you typed *310# with the star and hash, and that you are dialling from the Glo SIM on a dual-SIM phone.
- Restart the phone to refresh its connection to the network.
- Try later. USSD can be slow at busy times. If several attempts fail across an hour, try Self Care on 500.
- Check whether the line is barred. A line that cannot make calls or use USSD may be barred; see Glo line barred: how to restore it.
When the balance looks wrong
If your airtime is lower than you expected, the usual reasons are:
- A data plan set to renew, which buys itself from airtime; see cancelling Glo data auto-renewal.
- A Borrow Me loan being recovered from your recharge. Glo's Borrow Me Credit page says borrowed airtime is deducted from your next recharge; see Glo Borrow Me.
- A content or value-added subscription. The NCC's universal code 305 is for stopping services.
- Calls or browsing charged at out-of-bundle rates after a plan expired.
A worked example
- Example: you recharge
- ₦1,000
- Example: an outstanding Borrow Me loan of
- ₦200
- Balance you then see on *310#
- ₦800
If a deduction does not match anything you recognise, write down the date, time and amount and contact Glo on 300. If Glo does not resolve it, the NCC's complaint process lets you escalate; see escalating a Glo complaint to the NCC.
Other harmonised codes worth knowing
The same NCC list that introduced *310# set other universal codes that work on Glo. They are useful alongside a balance check:
| Code | What it does (per the NCC list) |
|---|---|
| 300 | Call centre or help desk |
| 303 | Borrow service |
| 305 | Stop a service |
| 311 | Credit recharge |
| 312 | Data plans |
| 321 | Share airtime or data |
| 323 | Data plan balance |
| 996 | Check SIM registration and NIN-SIM linkage |
Glo's own pages sometimes use these numbers differently; its Borrow Data page, for example, names *321# for borrowing data. When a menu appears, follow what it offers. For the full list, see Glo USSD codes.
A balance check from a dual-SIM phone is a common source of confusion. The phone sends the code through whichever SIM is set as default for calls, so you may be reading another network's balance. Choose the Glo SIM when the phone asks, or set it as the default before dialling. The reply should mention Glo, which confirms you are reading the right line.
Where Pryme fits
If your balance is low, you can top up any Glo line through airtime and data in the Pryme app, with the amount shown before you approve and a receipt you can check later.
Questions people ask
What is the code to check Glo airtime balance?
*310#. It is the NCC's harmonised balance code for all networks, published in June 2023.
Does *124# still work on Glo?
Many people still use it, but we could not confirm it on Glo's own pages in October 2026. Use *310# if it fails.
Why is my Glo balance check not working?
Usually poor signal, a mistyped code or dialling from the wrong SIM. Restart the phone and try *310# again, or call Self Care on 500.
Why is my Glo airtime reducing on its own?
Common causes are data auto-renewal, Borrow Me recovery, value-added subscriptions and out-of-bundle charges. The 305 code stops services; contact Glo on 300 for unexplained deductions.
Sources
- NCC: Harmonised short codes for all service providers (7 Jun 2023) · accessed Oct 2026
- Globacom: Support and helplines · accessed Oct 2026
- Globacom: Borrow Me Credit · accessed Oct 2026
This article is general information, not financial, legal or tax advice. Products described are provided under the terms on this site and are subject to regulation and eligibility.