Fake Mobile Number Portability (MNP) SIM Swapping Scam

फर्जी मोबाइल नंबर पोर्टेबिलिटी (एमएनपी) सिम स्वैपिंग स्कैम

INDIA — By BharatSecure Threat Intelligence Team ·

Verdict: Dangerous | Risk Score: 9/10 | Severity: MEDIUM

Category: Phishing

How Fake Mobile Number Portability (MNP) SIM Swapping Scam Works

  1. Step 1: Scammers collect victim details through phishing, vishing calls, or social media research including name, Aadhaar, PAN, mobile number, and bank information
  2. Step 2: Fraudsters impersonate telecom staff, RBI officials, or bank representatives, calling victims claiming better plans, lost SIM issues, or urgent e-KYC updates requiring SMS codes like *121#
  3. Step 3: Using collected or fake documents, scammers contact victim's mobile operator claiming phone is lost/stolen/hacked, block original SIM, and request porting to new SIM under their control
  4. Step 4: Telecom operator ports the number (sometimes with insider assistance), deactivating victim's SIM while scammer receives all calls/SMS including bank OTPs
  5. Step 5: Fraudsters reset bank apps/passwords using intercepted OTPs, transfer funds via UPI/net banking while victim remains unaware until financial losses occur

How This Scam Works — Detailed Explanation

The Fake Mobile Number Portability (MNP) SIM Swapping Scam is a rising threat in India, especially targeting customers of public sector banks and those who frequently use mobile banking, UPI apps, and WhatsApp. Scammers begin by sending unsolicited calls or SMS messages pretending to be from the bank, telecom operator, or even the Reserve Bank of India (RBI). They ask victims to dial *121# or share details like their SIM card number, under the pretext of urgent e-KYC updates or resolving lost/stolen SIM issues. These messages and calls are often automated to build a false sense of trust. Once the victim engages, they are connected to live callers who pressure them to immediately authenticate their details and participate in the so-called SIM porting process.

The scammers then manipulate the victim into providing sensitive information such as the 20-digit SIM card number, OTPs, or Aadhaar details claiming it is necessary for the Mobile Number Portability (MNP) request. They may also ask the victim to press certain keys like '1' to approve porting or confirm identity, making it seem legitimate. Once the scammer has these details, they initiate a fake MNP request, which leads to the victim's mobile number being transferred to a new SIM card controlled by the fraudster. The victim suddenly loses mobile network signal, cannot receive calls or SMS, and is unaware their mobile number is now in the hands of criminals.

With control over the victim’s mobile number, scammers exploit many services linked to that number — UPI apps such as Google Pay or PhonePe, mobile banking, WhatsApp, and even Aadhaar-based OTP services. They can intercept OTPs and verification messages needed to transfer money, reset passwords, or access confidential information. This leads to unauthorized transactions, fraudulent withdrawals, identity theft, and serious financial loss for the victim. Often, victims notice the loss only after funds vanish or they cannot access their bank accounts.

This scam is particularly dangerous because it exploits trusted communication channels and uses social engineering to bypass security layers. The widespread use of mobile numbers for multiple financial and identity-related services in India makes this scam highly effective. Being aware of the red flags such as unsolicited calls/SMS asking for SIM or Aadhaar details, urgent porting requests, and sudden network loss can help potential victims avoid falling prey to these fraudsters.

Who Does Fake Mobile Number Portability (MNP) SIM Swapping Scam Target?

Middle-aged to elderly Indians (40+), bank customers of HDFC/SBI/major banks, salaried professionals and retirees in urban areas with linked savings accounts

Red Flags — How to Identify Fake Mobile Number Portability (MNP) SIM Swapping Scam

  • Unsolicited calls/SMS from 'bank/telecom/RBI' asking for *121# SMS or SIM number sharing
  • Claims of lost/stolen SIM or urgent e-KYC/Aadhaar update requiring personal details
  • Automated trust-building messages followed by live calls pressuring for immediate authentication
  • Requests to 'press 1' for porting or share 20-digit SIM card numbers
  • Sudden loss of mobile network signal or inability to receive calls/SMS

What To Do If You Encounter Fake Mobile Number Portability (MNP) SIM Swapping Scam

  1. Call 1930 immediately to report any suspicious calls or SMS related to MNP or SIM porting.
  2. Contact your mobile service provider directly using official customer care numbers to verify any MNP requests.
  3. Do not share your SIM card number, Aadhaar details, or OTPs with anyone over phone or SMS.
  4. Inform your bank immediately if you notice unauthorized transactions or loss of mobile connectivity.
  5. Block your bank accounts and UPI apps temporarily if your mobile number is lost or stolen until resolved.

How to Report Fake Mobile Number Portability (MNP) SIM Swapping Scam in India

  • Call 1930 — National Cyber Crime Helpline (24x7)
  • File a complaint at cybercrime.gov.in
  • Contact your bank immediately if money was lost
  • Call RBI helpline: 14440 for banking fraud

Frequently Asked Questions

What is Fake Mobile Number Portability (MNP) SIM Swapping Scam?
Dangerous: Fake Mobile Number Portability (MNP) SIM Swapping Scam is a confirmed scam in India. Protect yourself from dangerous fake MNP SIM swapping scams targeting a public bank customers. Learn red flags, prevention tips & report at 1930.
How does Fake Mobile Number Portability (MNP) SIM Swapping Scam work?
Step 1: Scammers collect victim details through phishing, vishing calls, or social media research including name, Aadhaar, PAN, mobile number, and bank information Step 2: Fraudsters impersonate telecom staff, RBI officials, or bank representatives, calling victims claiming better plans, lost SIM issues, or urgent e-KYC updates requiring SMS codes like *121# Step 3: Using collected or fake documents, scammers contact victim's mobile operator claiming phone is lost/stolen/hacked, block original SIM, and request porting to new SIM under their control Step 4: Telecom operator ports the number (sometimes with insider assistance), deactivating victim's SIM while scammer receives all calls/SMS including bank OTPs Step 5: Fraudsters reset bank apps/passwords using intercepted OTPs, transfer funds via UPI/net banking while victim remains unaware until financial losses occur
How to protect yourself from Fake Mobile Number Portability (MNP) SIM Swapping Scam?
Call 1930 immediately to report any suspicious calls or SMS related to MNP or SIM porting. Contact your mobile service provider directly using official customer care numbers to verify any MNP requests. Do not share your SIM card number, Aadhaar details, or OTPs with anyone over phone or SMS. Inform your bank immediately if you notice unauthorized transactions or loss of mobile connectivity.
How to report Fake Mobile Number Portability (MNP) SIM Swapping Scam in India?
Report to cybercrime.gov.in or call 1930 (National Cyber Crime Helpline). You can also contact your local police station's cyber cell.

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