Step-by-Step Guide to SIM Card Registration Check in Bangladesh (2025 Update)

In today’s digital age, your mobile number is more than just a means of communication — it’s a key to your personal identity, finances, and online presence. That’s why checking how many SIM cards are registered under your National ID (NID) in Bangladesh has become an essential part of digital security. A simple sim card registration check can reveal whether unauthorized numbers are using your NID, helping you stay protected from misuse or fraud.

In Bangladesh, every mobile connection is linked to a user’s biometric and NID data as per the Bangladesh Telecommunication Regulatory Commission (BTRC) regulations. The goal is to ensure accountability and prevent illegal or fraudulent use of SIM cards. However, despite these safeguards, cases still arise where people find additional SIMs unknowingly registered under their names. This not only puts personal privacy at risk but can also connect you to illegal activities without your knowledge.

Performing a sim card registration check allows you to verify how many SIMs are currently active under your NID and which operators they belong to. In this guide, you’ll learn exactly how to perform the check, understand what to do if you find unauthorized numbers, and discover best practices to keep your mobile identity secure.

What is SIM Card Registration in Bangladesh?

SIM card registration in Bangladesh is a government-mandated process that ensures every active mobile number is linked to a verified national identity. This system, regulated by the Bangladesh Telecommunication Regulatory Commission (BTRC), was introduced to curb the rising number of crimes and scams conducted through unregistered or fake SIM cards. 

The process is part of the broader biometric SIM registration initiative launched nationwide. Each operator — Grameenphone, Robi, Banglalink, Airtel, and Teletalk — must verify users before activating any new number. This step ensures that every SIM in use belongs to a real, traceable individual, effectively reducing mobile-based criminal activities.

Understanding the registration process helps you realize why a sim card registration check is vital. It allows you to confirm whether your NID is being used responsibly and only for the numbers you own. Unauthorized registrations can happen when someone uses your identity details without permission — an act that can lead to serious legal and financial consequences.

How to Perform a SIM Card Registration Check

Performing a sim card registration check in Bangladesh is simple, fast, and free. 

Step 1: Dial the Universal Code

From any mobile phone, dial *16001#. A message will appear on your screen asking for the last four digits of your NID.

Step 2: Enter the Required Information

Type the last four digits of your National ID number and press “Send.” Within a few seconds, you’ll receive a reply message listing all the mobile operators under which your NID has active SIM registrations. For security purposes, the full numbers aren’t displayed — instead, you’ll see the operator’s name and the count of active SIMs linked to your NID.

Step 3: Operator-Specific Checks

If you want more detailed information, most mobile operators in Bangladesh also allow direct inquiries:

• Grameenphone users can visit their nearest service center or use the MyGP app to verify registered SIMs.

• Robi and Airtel users can check via USSD or by contacting customer care for additional details.

• Banglalink and Teletalk users can also use the same *16001# process or visit their respective websites for verification.

Step 4: Interpret the Results

Your message will show results like:
“GP: 3, Robi: 2, BL: 1, TL: 0” — meaning you have 3 Grameenphone, 2 Robi, and 1 Banglalink SIM registered under your NID.

Checking this information periodically is a smart digital habit. It not only keeps your mobile identity secure but also helps prevent your NID from being misused by others. 

What to Do if You Discover Unauthorized or Extra SIMs

Discovering unknown or extra SIM cards registered under your NID can be alarming — but it’s something you can resolve quickly if you act correctly. A sim card registration check gives you transparency, but the next step is taking action to protect your identity.

Step 1: Verify and Confirm

Before you panic, make sure the numbers you see truly don’t belong to you. Sometimes, you may have purchased a SIM long ago and forgotten about it.

Step 2: Understand Your SIM Quota

In Bangladesh, one NID can have a maximum of 15 SIM cards across all operators. This rule, set by the Bangladesh Telecommunication Regulatory Commission (BTRC), ensures that no one can own an unlimited number of connections.

Step 3: Report Unauthorized Numbers

Visit the nearest customer care center of the concerned operator (Grameenphone, Robi, Airtel, Banglalink, or Teletalk). Bring your NID card and any active SIM under your name. Explain the situation to the customer service agent — they will help identify and block any SIMs that are not officially registered to you. In most cases, the process is completed within a few working days.

Step 4: Request SIM Ownership Cancellation

If you find numbers you never used, you can file an ownership cancellation request. This officially removes your name and NID from those unauthorized SIMs.

Step 5: Follow Up for Confirmation

After a few days, perform another sim card registration check using *16001# to confirm that the unwanted SIMs have been removed. 

Handling these issues promptly helps you avoid potential problems like identity theft, fraudulent calls, or misuse of your personal details.

Frequently Asked Questions (FAQ)

Q1: How many SIM cards can be registered under one NID in Bangladesh?

A: According to the Bangladesh Telecommunication Regulatory Commission (BTRC), a single National ID (NID) can have a maximum of 15 SIM cards registered across all mobile operators combined.

Q2: How can I check how many SIMs are registered under my name?

A: Simply dial *16001# from your mobile phone and enter the last four digits of your NID. You’ll receive an SMS showing the number of SIMs registered under your ID for each operator.

Q3: Does it cost anything to perform a SIM registration check?

A: No, the sim card registration check is completely free. All mobile operators in Bangladesh offer this service at no charge to users.

Q4: What should I do if I find unauthorized SIMs registered under my NID?

A: Visit the nearest customer care center of the concerned operator (Grameenphone, Robi, Airtel, Banglalink, or Teletalk) with your NID and active SIM.

Q5: Do I need an internet connection to check my SIM registration?

A: No, you don’t need the internet. The entire process can be completed using a basic mobile phone through the *16001# code.

Wrapping Up

In a world where digital identity is directly tied to your mobile number, performing a sim card registration check isn’t just a precaution — it’s a necessity. In Bangladesh, where SIM cards are linked to the National ID through biometric verification, ensuring that your information is used correctly protects you from identity theft, fraud, and unauthorized access.

Regularly checking how many SIM cards are registered under your NID gives you peace of mind and control over your personal data. The process is simple, free, and accessible to everyone — dial *16001#, enter your NID’s last four digits, and review the list of operators and SIM counts associated with your ID.

Staying proactive about your SIM registration is one of the most effective ways to protect your mobile identity. Make it a habit to verify your registration status at least once every few months. It’s a small step that goes a long way in preventing potential misuse of your personal information.