How to Block Unauthorized
SIM on CNIC — Complete Guide
Found an unknown SIM registered on your CNIC? Act now. This step-by-step guide covers every official method to block unauthorized SIMs in Pakistan — fast, free, and legally backed by PTA.
Unauthorized SIM Found? Every Minute Counts.
Fraudsters can use an unauthorized SIM to drain your mobile wallet, intercept bank OTPs, and commit crimes under your name — all within hours. Block it now.
What Can Criminals Do With an Unauthorized SIM on Your CNIC?
An unauthorized SIM registered on your CNIC is not just a privacy violation — it is a loaded weapon in the hands of a fraudster. Here is exactly what damage can be done within hours of such a SIM being activated:
Empty Your Mobile Wallet
Easypaisa, JazzCash, and other mobile wallets use SMS-based OTPs. With your number on their SIM, they can reset your wallet PIN and transfer all your funds.
Access Your Bank Account
Most Pakistani banks send transaction OTPs to your registered mobile number. An unauthorized SIM lets hackers intercept these codes and authorize fraudulent transfers.
Steal Your Identity
They can open new mobile accounts, apply for loans, and register additional SIMs in your name — leaving you legally and financially responsible.
Bypass 2-Factor Authentication
Gmail, WhatsApp, Facebook, and other platforms that use SMS-based 2FA can be taken over using an unauthorized SIM linked to your CNIC.
Commit Crimes in Your Name
The SIM is registered under your CNIC. Any criminal activity conducted using that number — threats, scams, blackmail — can be traced back to your national identity.
Block Your Own SIM Access
Fraudsters can abuse the 5-SIM limit to fill your CNIC quota, preventing you from activating legitimate SIMs for personal or business use.
6 Official Ways to Block an Unauthorized SIM in Pakistan
Pakistan provides multiple official channels to block SIM cards fraudulently registered on your CNIC. Click any method below to jump directly to its step-by-step guide:
Block Unauthorized SIM via SMS to 668
The SMS to 668 method is the fastest way to block an unauthorized SIM. It works 24/7 on any Pakistani network and requires no internet connection. First, check which SIMs are on your CNIC using our CNIC SIM check guide, then follow the steps below to block:
First — Identify the Unauthorized Number
Send your 13-digit CNIC (without dashes) as an SMS to 668. Within seconds, PTA will reply with a complete list of all SIM cards registered on your CNIC. Note down every number you did not register yourself.
🚨 Identify all unauthorized numbers firstOpen a New SMS to 668
Create a new SMS message. Set the recipient as 668 — PTA's official short code. This short code is available free of charge on all networks: Jazz, Telenor, Zong, Ufone, and SCOM.
💡 Free on all networks — no balance deductedType the Unauthorized Mobile Number
In the message body, type the 11-digit unauthorized mobile number you want to block — for example: 03001234567. Do not add spaces, dashes, or any other characters. Send only the number.
📝 Format: 11 digits only — e.g. 03001234567Send the SMS & Await Confirmation
Press Send. PTA's system will receive your block request and initiate the process. You will receive a confirmation SMS acknowledging your request and providing a reference number. Save this reference.
📨 Confirmation SMS usually arrives within minutesVerify Blocking After 24–72 Hours
Send your CNIC to 668 again after 24–72 hours to confirm the unauthorized number no longer appears in your SIM list. If it still appears, proceed to Method 2 or contact the PTA helpline↗.
✅ Re-check via 668 to confirm successful blockingBlock via PTA Official Online Portal
The PTA SIMS online portal↗ is the most authoritative platform for both checking and blocking unauthorized SIM registrations. Using this method creates an official government record of your complaint — essential for legal follow-up.
Visit the PTA SIMS Portal
Open any browser and go to pta.gov.pk↗. Navigate to Consumer Support → SIM Information from the main menu. The portal is available 24/7 on all devices.
🌐 Available 24/7 on mobile and desktopEnter Your CNIC & Complete Verification
Enter your 13-digit CNIC number in the search field and complete the CAPTCHA verification. The system will display all SIM cards currently registered under your CNIC across all networks.
📋 All networks shown in one viewSelect the Unauthorized SIM
Review the list carefully. Click or select the mobile number you wish to block. Confirm it is a number you did not register. Selecting the wrong number could block a SIM you actively use.
⚠️ Double-check before selecting — cannot be undone instantlySubmit Block Request & File Complaint
Click the block/deactivation option and submit the form. The portal will also offer you the option to file an official complaint. Always file the complaint — it creates a legal case reference and triggers an internal investigation by PTA. You can also file directly at the PTA Complaint Portal↗.
📋 Save your complaint reference numberTrack Your Complaint Status
Use your complaint reference number to track the status of your block request and investigation on the PTA Complaint Portal↗. PTA typically resolves complaints within 7 working days.
🔍 Track complaint status online anytimeBlock via PTA & Operator Helplines
If you prefer speaking to a real person or if the online methods are unavailable, calling the PTA helpline or your telecom operator's customer support is a reliable alternative for blocking unauthorized SIMs.
PTA Helpline
Toll-free, available Mon–Sat 9 AM–5 PM. Request SIM block and file formal complaint.
0800-55055Jazz Helpline
Free from Jazz SIM. Available 24/7. Request deactivation of unauthorized Jazz SIM.
111Telenor Helpline
Free from Telenor. 24/7 support. Report unauthorized Telenor registration.
345Zong Helpline
Free from Zong SIM. 24/7 available. Request block for unauthorized Zong number.
310Ufone Helpline
Free from Ufone. Available 24/7. Report and request block of unauthorized Ufone SIM.
333FIA Cybercrime
For criminal fraud cases. Lodge a formal cybercrime complaint with evidence.
9911Block at Telecom Operator's Franchise
Visiting the relevant telecom operator's authorized franchise or customer service center in person is one of the most effective methods — especially when same-day blocking is required or when you need an official written acknowledgment.
Identify Which Network the Unauthorized SIM Belongs To
Use the 668 SMS check or simsownersdetails.com to confirm the network of the unauthorized SIM. Jazz numbers start with 03X (030, 032), Telenor with 034, Zong with 031, Ufone with 033.
📡 Identify the operator first to visit the right franchiseGather Required Documents
Bring your original CNIC card (mandatory), a photocopy of your CNIC, and if possible, the PTA confirmation SMS or complaint reference number from a previous block attempt. Do not carry photocopies alone — originals are required for biometric verification.
🪪 Original CNIC is compulsory — no exceptionsVisit the Authorized Franchise
Go to the nearest authorized franchise (not a third-party dealer) of the operator. Find locations via Jazz Store Locator↗, Telenor Stores↗, or Zong Centers↗.
🏢 Visit only authorized franchise — not dealersComplete Biometric Verification & Submit Request
The franchise agent will verify your identity via fingerprint scan through NADRA's biometric system↗. Once confirmed as the CNIC holder, they will initiate the deactivation of the unauthorized SIM immediately from their internal systems.
👆 Fingerprint confirms you are the rightful CNIC holderCollect Written Acknowledgment
Always ask the franchise agent to provide a written or printed acknowledgment of your block request — including the date, unauthorized number, and agent ID. This document is critical if you need to escalate the matter legally.
📄 Keep the written acknowledgment as legal proofFile a Cybercrime Complaint with FIA
If financial fraud has already occurred, or if PTA and operator-level blocking has failed, escalating to the Federal Investigation Agency (FIA) Cybercrime Wing is the most powerful legal option available. This triggers a criminal investigation under PECA 2016.
Gather All Evidence Before Filing
Collect screenshots of the unauthorized SIM in the 668 reply, any fraudulent transactions, bank alerts, or communications using that number. The more evidence you have, the stronger your case will be.
📸 Screenshot everything — timestamps matterFile Online at cybercrime.gov.pk
Visit cybercrime.gov.pk↗ and click "Report a Complaint." Select SIM Fraud / Identity Theft as the complaint category. Fill in all required fields with complete and accurate information.
💻 Online complaints are processed fasterOr Visit Your Nearest FIA Office
Alternatively, visit the nearest FIA Cybercrime Circle↗ in Karachi, Lahore, Islamabad, Peshawar, or Quetta in person. Bring your original CNIC, evidence printouts, and PTA complaint reference.
🏢 FIA offices in all major cities of PakistanReceive FIR & Case Reference
Once your complaint is accepted, FIA will register a formal FIR (First Information Report) under PECA 2016. You will receive a case reference number. The investigation can lead to the arrest and prosecution of the SIM fraudster.
⚖️ PECA 2016 carries up to 3 years imprisonment for SIM fraudVisit PTA Regional Office in Person
For cases requiring a certified official report, or when all other methods have failed to resolve the issue, visiting a PTA regional office is the most authoritative in-person option available to Pakistani citizens.
Find Your Nearest PTA Regional Office
PTA has regional offices in Islamabad (HQ), Karachi, Lahore, Peshawar, Quetta, and Multan. Visit PTA's official contacts page↗ for exact addresses and visiting hours (typically Monday to Friday, 9 AM to 5 PM).
🗺️ HQ: Islamabad — also in Karachi, Lahore, PeshawarBring All Documentation
Carry your original CNIC, printed copy of the 668 SMS reply showing unauthorized SIMs, PTA online complaint reference (if filed), and any evidence of fraud or unauthorized use. A written complaint letter addressed to PTA is also recommended.
📁 Bring all documents — originals plus copiesSubmit Application & Biometric Verification
PTA staff will register your application, conduct biometric verification to confirm your CNIC ownership, and initiate a formal administrative block order against the unauthorized SIM across all relevant operator systems.
👆 Biometric verification confirms CNIC ownershipReceive Official PTA Acknowledgment Letter
PTA will provide an official stamped acknowledgment letter confirming your complaint and block request. This letter is legally valid and can be used in court proceedings if required. Keep it safely with your personal records.
📜 Official stamped letter — valid legal documentWhich Blocking Method Should You Use?
Use this comparison to pick the right blocking method based on your urgency, available resources, and situation:
| Method | Speed | Internet | Creates Legal Record | Best Situation |
|---|---|---|---|---|
| SMS to 668 | Instant | ❌ Not needed | ⚠️ Partial | First immediate action — any time |
| PTA Online Portal | 1–2 min | ✅ Required | ✅ Full record | Online complaint + official blocking |
| PTA / Operator Helpline | 5–15 min | ❌ Not needed | ⚠️ Phone record only | No internet access / prefer human help |
| Operator Franchise Visit | Same day | ❌ Not needed | ✅ Written acknowledgment | Same-day block + written proof needed |
| FIA Cybercrime | Days | ✅ Optional | ✅ FIR registered | Financial fraud occurred — criminal action |
| PTA Office Visit | Same day | ❌ Not needed | ✅ Stamped letter | All methods failed / certified report needed |
Critical Steps to Take After Blocking an Unauthorized SIM
Blocking the SIM is just the first step. Protect yourself fully by completing this comprehensive post-blocking security checklist:
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Re-verify via 668 — Send your CNIC to 668 again after 24–72 hours to confirm the unauthorized number is no longer listed on your CNIC. Also verify on simsownersdetails.com.
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Change all linked account passwords — Immediately update passwords for Gmail, WhatsApp, Facebook, Instagram, and any other accounts where SMS-based 2FA is tied to a number on your CNIC.
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Notify your bank — Call your bank's fraud department and inform them of the unauthorized SIM. Request a review of all transactions from the past 30 days and temporarily freeze any suspicious activity.
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Secure mobile wallets — Log in to Easypaisa↗, JazzCash, and other wallets. Change PINs and review recent transaction history for any unauthorized transfers.
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Update your NADRA information — If your CNIC was physically lost or stolen, visit NADRA↗ to flag the compromised document and apply for a replacement card with an updated record.
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Enable biometric lock on your existing SIMs — Visit your operator's franchise to activate biometric lock on all legitimate SIMs you own. This prevents future unauthorized porting or cloning.
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Set a 3-month SIM check reminder — Schedule recurring reminders every 90 days to check SIMs on your CNIC via 668 or simsownersdetails.com. Early detection prevents major damage.
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Inform family members — Elderly parents and less tech-savvy family members are frequent targets. Teach them how to identify SIM fraud and who to call if they suspect their CNIC has been misused.
Frequently Asked Questions About Blocking Unauthorized SIMs
Start Protecting Your CNIC Right Now
Check all SIMs registered on your CNIC for free — identify unauthorized registrations and take action before fraudsters cause any damage.