If your Glo SIM card has been inactive for weeks or months, you might suddenly see “No Service”, “SIM Not Registered,” or you may be unable to make calls or use data. The good news? In many cases, you can reactivate (welcome back) your Glo SIM without buying a new one.

This guide explains:

• What “Welcome Back” means for Glo

• Why your SIM gets deactivated

• How long before it’s permanently blocked

• Step-by-step ways to reactivate it

• What to do if it’s barred permanently

• FAQs for Nigerian users

Everything explained clearly and practically.

What Does “Welcome Back” Mean on Glo?

“Welcome back” simply refers to reactivating an inactive or deactivated Glo SIM card so you can:

• Make and receive calls

• Send and receive SMS

• Use mobile data

• Recharge airtime

• Access USSD services

In Nigeria, SIM cards become inactive if they are not used for a certain period.

About Glo Nigeria

Globacom (popularly called Glo) is one of Nigeria’s major telecom providers offering:

• Prepaid and postpaid services

• 4G LTE coverage

• Data plans

• Voice bundles

• Glo Berekete and other tariffs

If your Glo SIM has stopped working, it’s usually due to inactivity or regulatory compliance issues.

Why Your Glo SIM Was Deactivated

There are several common reasons:

1. SIM Inactivity

If you don’t:

• Make calls

• Send SMS

• Buy data

• Recharge airtime

for 90–180 days, the SIM may be suspended.

After prolonged inactivity (usually 6–12 months), it may be permanently deactivated.

2. NIN Not Linked

In Nigeria, SIM cards must be linked to your National Identification Number (NIN). If not linked, your line may be barred.

3. Regulatory Bar by NCC

Nigerian Communications Commission (NCC) requires telecom operators to deactivate non-compliant SIMs.

4. Lost SIM Reported

If you reported it lost and later found it, it may need reactivation.

5. SIM Registration Issues

Incorrect or incomplete SIM registration can also lead to deactivation.

How Long Before Glo Permanently Blocks a SIM?

Generally:

• 0–90 days → Active

• 90–180 days → Suspended

• 6–12 months → Possibly permanently recycled

 Once recycled and reassigned to another customer, recovery is impossible.

How to Welcome Back (Reactivate) Your Glo SIM

There are 5 working methods.

Method 1: Recharge the SIM (If Not Fully Deactivated)

If your SIM still shows signal:

Steps:

1. Dial *123*PIN#

2. Or load airtime via bank app

3. Make a call immediately

4. Send SMS

5. Turn on mobile data

If the SIM was only suspended, it may automatically reactivate within minutes.

Method 2: Visit a Glo Store (Most Reliable Method)

If the SIM shows:

• “No Service”

• “SIM Not Registered”

• Completely dead

You must visit a Glo office.

What to Bring:

• Valid ID (NIN slip, National ID, Driver’s License)

• The SIM card

• Phone used with the SIM

• NIN details

At the store:

• Tell them you want to reactivate your SIM

• They will verify ownership

• Capture biometrics if needed

• Reactivate within 24 hours (sometimes instantly)

This is the safest method.

Method 3: Link Your NIN to the SIM

If the issue is NIN-related:

Dial:

Follow prompts.

Or visit:

• A Glo store

• NIMC center

Once linked, the SIM may be restored.

Method 4: Call Glo Customer Care

If you can still access the SIM:

Dial:

Explain:

• You want to welcome back your inactive line

They will:

• Confirm status

• Tell you if recovery is possible

Method 5: Use Another Glo Line to Inquire

If your SIM is completely dead:

• Borrow another Glo SIM

• Dial 121

• Provide the affected number

• Confirm recovery status

What If the SIM Was Permanently Deactivated?

If Glo says the number is:

• Recycled

• Assigned to someone else

• Permanently deleted

Unfortunately, it cannot be recovered.

You’ll need to:

• Buy a new SIM

• Update banks and apps with new number

How to Prevent Glo SIM Deactivation

To keep your SIM active:

✔ Make at least one call monthly

✔ Send one SMS

✔ Buy small data occasionally

✔ Recharge ₦100 monthly

✔ Link your NIN

Even minimal activity keeps it alive.

Does Glo Charge for SIM Reactivation?

Usually:

• Reactivation is free

• SIM replacement may cost ₦500–₦1,000

Policies may vary by location.

How Long Does Glo Reactivation Take?

---

Common Error Messages Explained

“SIM Not Registered”

Your SIM is deactivated or barred.

“No Service”

Could be:

• Network issue

• SIM damaged

• SIM deactivated

“Emergency Calls Only”

Usually regulatory bar or inactivity.

Frequently Asked Questions (FAQ)

1. Can I welcome back my Glo SIM online?

No official online portal exists. Visit a Glo store.

2. How many months before Glo blocks a SIM?

Usually 3–6 months of inactivity.

3. Can I reactivate without NIN?

No. NIN is mandatory in Nigeria.

4. Is SIM reactivation free?

Most times yes, except replacement.

5. What if my number was very important?

Visit Glo immediately before recycling period passes.

6. Can someone else reactivate it for me?

No. You must verify identity.

7. Can I recover a SIM after one year?

Rare. Likely recycled.

8. Does recharging always reactivate?

Only if the SIM is not fully deactivated.

9. Can banks block my account if SIM is inactive?

Yes, especially if linked to OTP verification.

10. What is the fastest way to welcome back Glo SIM?

Visit a Glo office with your ID and NIN.

Final Thoughts

Reactivating your Glo SIM in Nigeria is usually simple if you act fast. The key is:

• Don’t leave your SIM unused for months

• Link your NIN

• Keep minimal activity

If the SIM is only suspended, recharging may fix it. If fully deactivated, visiting a Glo store is your best solution.

The sooner you act, the higher your chances of recovery.