Glo Customer Care Number: Fast, Accurate Ways to Reach Support

Globacom (Glo) operates one of Nigeria’s largest mobile networks, serving tens of millions of customers since its launch in 2003. If you need help with airtime, data, SIM issues, number porting, enterprise services, or roaming, Glo’s customer care team is available 24/7 and reachable through multiple, well-defined channels. This guide explains the official numbers, how best to use them, and practical alternatives that often resolve issues even faster.

In 2023, the Nigerian Communications Commission (NCC) introduced harmonized short codes across all mobile networks to make support easier to reach and remember. That means a single, simple number will now connect you to Glo’s care line from a Glo phone, and standardized USSD codes handle common tasks like recharging and checking balances.

The Numbers That Work in 2025

The primary Glo customer care numbers below are the most reliable options for quick, round-the-clock support. They are designed to be toll-free from Glo lines within Nigeria and to route you to the Interactive Voice Response (IVR) system where you can resolve many issues without waiting for an agent—or get through to a human quickly when you need one.

• 300 — NCC-harmonized customer care short code. Toll-free from Glo lines in Nigeria; available 24/7. Dial and follow the prompts to reach billing, data, SIM services, roaming, or a live agent.
• 121 — Legacy Glo customer care line. Still active on many SIMs; toll-free from Glo lines within Nigeria. If 300 ever fails due to a temporary network issue, try 121.
• From other Nigerian networks — Dial 300 from your line; the NCC requires all operators to map this code to their own care centers, so it will route you to your provider. For help with a Glo line while using another network, use online channels detailed below or call from the Glo line itself for toll-free access.
• From abroad — Call +234 805 002 0121 (standard international calling rates apply). This reaches Glo’s helpline from outside Nigeria; availability is 24/7, but consider time-zone differences for faster agent pickup.

Tip: If your phone is lost or stolen, prioritize speed—dial 300 from any Glo line to request a line barring/SIM block, or visit a GloWorld shop with valid ID for a replacement SIM. If you are abroad without roaming, use the international line to secure your number and wallet services immediately.

What to Expect When You Call

Calls start on the IVR, with language selection and a short menu. You’ll be asked for the mobile number you’re querying (if you aren’t calling from it), and you may be prompted to verify last recharge amount or recent dialed numbers for security. Keep your SIM pack (for PUK), a valid ID, and your most recent recharge details handy for identity verification.

Common IVR paths include balances and usage, data purchases, data sharing/gifting, SIM swap status, value-added services (VAS) opt-out, network coverage reports, international roaming activation, and enterprise support routing. Many issues—like buying a data plan or turning off a chargeable service—complete instantly on the IVR without waiting for an agent. For account-specific investigations (billing disputes, failed recharges, persistent network faults), choose to speak with an agent; you’ll receive a ticket ID by SMS for follow-up.

Fast Self-Service Alternatives (Often Quicker Than Calling)

For routine actions, Glo’s harmonized USSD codes are fast and work on any mobile phone, no data required. These codes are the same across Nigerian operators since the NCC’s 2023 policy, which makes them easy to remember and consistent when you switch devices or SIMs. Results return via on-screen prompts and SMS confirmations.

• Check airtime balance: *310#
• Recharge: *311*PIN# (scratch card PIN)
• Buy/Manage data: *312# (browse plans, auto-renew, one-off)
• Borrow airtime/data (Glo Borrow Me): *303# (eligibility and fees shown before confirmation)
• Link/verify NIN: *996# (NIN-SIM compliance checks and updates)

Data users can also manage plans via the Glo Café app (Android/iOS), which shows real-time balances, usage trends, and tailored bundles. If you can’t install an app, the USSD codes above cover most needs, including stopping unwanted VAS charges via the data/plan management menus.

Walk‑In Help and Official Web Resources

If your issue involves SIM registration, biometric updates, SIM swap, device checks, or you need physical assistance, visit a GloWorld shop. The flagship address is: Glo/Globacom Headquarters (Mike Adenuga Towers), 1 Mike Adenuga Close, Off Adeola Odeku Street, Victoria Island, Lagos. For store hours and the nearest outlet nationwide, use the store locator on the official website.

Official website: https://www.gloworld.com/ng — This is the starting point for plan catalogs, roaming guides, coverage information, promotions, and links to self-care. For account-specific inquiries online, use the contact sections or in-app support within Glo Café; you’ll typically receive a case reference number by email or SMS. Online channels are especially handy if you can’t place a call (for example, while roaming without airtime).

Practical Tips for Faster Resolution

Before you call 300 or 121, gather key details: the Glo number in question, last successful recharge amount/date, your SIM pack (for PUK), recent locations where you experienced coverage issues, and screenshots of error messages or failed transactions if applicable. This information lets agents verify and troubleshoot without multiple callbacks.

Call volumes are typically lighter early mornings (06:00–09:00 WAT) and late evenings (20:00–23:00 WAT) on weekdays. For failed data activation or unintended deductions, use the harmonized USSD first to confirm current plan status and auto-renew settings, then contact care with your findings—agents can act faster when you’ve already ruled out common self-service fixes.

When to Escalate

If an issue persists beyond the first contact—such as repeated failed recharges with verified debits, chronic lack of service in a previously covered area, or unresolved SIM registration flags—ask the agent for a formal escalation and note the ticket ID sent via SMS. Keep this ID for reference; it’s required if you need to follow up at a GloWorld shop or through online support.

For enterprise accounts, requests involving multiple lines, PBX/SIP trunks, or dedicated data links should be logged with the account’s designated support channel. If you don’t have that contact, call 300 from a corporate Glo line and choose the enterprise option from the IVR to be routed correctly.

Summary: The Essentials

Use 300 (toll-free, 24/7) from any Glo line in Nigeria for customer care; 121 remains a reliable legacy option. From overseas, call +234 805 002 0121. For quick self-service, rely on the NCC-harmonized USSD codes—*310# (balance), *311*PIN# (recharge), *312# (data), *303# (borrow), *996# (NIN). For in-person assistance, visit a GloWorld shop; the Lagos headquarters is at Mike Adenuga Towers, Victoria Island.

These channels cover almost every scenario—from simple balance checks to complex account investigations—so you can choose the fastest path and get back online with minimal downtime.