Whether your smartphone was stolen in a busy market, you accidentally dropped your phone somewhere, or you discovered a suspicious number registered against your ID card, acting fast is critical. In Pakistan, a mobile SIM card is the gateway to your digital identity. From banking OTPs and EasyPaisa wallets to WhatsApp and social media accounts, leaving a lost or unauthorized SIM card active puts your privacy and finances at severe risk.
Tip:
If your Telenor SIM is lost or stolen, block it as soon as possible to protect your calls, messages, and accounts linked to your number. After blocking it, you can visit a Telenor franchise to get a replacement SIM with the same number.
Method 1: Calling the Helpline (The Fastest Emergency Method)
When you lose your phone, you don’t have access to the My Telenor App. The quickest way to shut down your connection is by calling customer support from a friend or family member’s phone. The support team is available 24/7 to handle emergency blocking requests.
- Calling from another Telenor number: Simply dial 345 from any friend or relative’s active Telenor SIM card and follow the automated voice prompts to connect to a customer care executive.
- Calling from another network (Jazz, Zong, Ufone, or Landline): If no one around you has a Telenor SIM, dial 0345-1111345 from any other cellular network or landline phone to reach the exact same support desk.
To prevent unauthorized people from blocking your number as a prank, the customer care representative will ask you a few simple security questions to verify that you are the real owner. Be prepared to provide:
- Your 13-digit Computerized National Identity Card (CNIC) number.
- The full name of the SIM card owner as printed on the ID card.
- Your mother’s name or your place of birth (as registered in your SIM details).
- Two or three phone numbers that you frequently call or text from that SIM.
- An approximate estimate of your last balance recharge or your last monthly bill amount.
Once the representative verifies your answers, they will immediately apply a temporary lock on your SIM card. Within seconds, the lost chip will lose all network signals, rendering it useless to anyone who finds it.
Method 2: Blocking via Official Email Support (Best If You Are Abroad)
What if you are traveling overseas, sitting outside Pakistan, or cannot make a phone call to the helpline? You can easily request an emergency SIM block by contacting Telenor’s official customer support via email.
- Open your email inbox and create a new message addressed to telenor345@telenor.com.pk.
- In the subject line, write: EMERGENCY: Block Lost SIM – [Your Mobile Number].
- In the body of your email, explain briefly that your SIM has been lost or stolen and you need it blocked immediately to prevent misuse.
- Include your full name, your active Telenor number, your 13-digit CNIC number, and your mother’s name for verification.
- For faster processing, attach a clear, double-sided photo of your original CNIC to the email.
The email support desk prioritizes lost SIM reports and typically processes the block within a few hours of verifying your identification documents.
Method 3: Visiting a Franchise or Customer Care Center
If you prefer speaking to someone face-to-face, or if you want to get a replacement SIM card right away, visiting a physical store is your best option. When you buy a replacement SIM, the old lost SIM is automatically and permanently blocked by the system.
Simply take your original physical CNIC and walk into any authorized Telenor Franchise or official Customer Care Center. Tell the counter executive: “My phone was lost, and I want to block my old SIM card and get a duplicate SIM.” You will place your thumb on a biometric scanner to verify your fingerprint with the NADRA database. As soon as the representative hands you your new duplicate SIM jacket (which costs around 150 to 200 rupees), the old chip that is sitting in your lost phone is permanently deactivated.
Method 4: How to Block Unauthorized SIMs Registered on Your CNIC
Sometimes you don’t want to block a lost SIM, but rather an unknown, unauthorized phone number that someone else activated using your ID card details. Under PTA rules, allowing strangers to use a SIM card registered in your name is a serious legal liability.
First, check how many numbers are active under your name by sending your 13-digit CNIC number in an SMS to 668. If the reply message shows more Telenor numbers than you actually use, you must clean up your record immediately. Visit your nearest Telenor Franchise with your original ID card and ask the representative to perform a “SIM Disownership” or “SIM Blocking BVS.” They will pull up all the numbers registered to your ID, ask you to identify the ones you don’t recognize, and permanently shut them down through a simple thumb verification scan. This service is completely free of cost.
Temporary Blocking vs. Permanent Termination: What is the Difference?
When requesting a block, it helps to understand the two different states of deactivation so you can choose the right one for your specific situation:
- Temporary Suspension: Choose this option if you just misplaced your phone around the house, office, or in a friend’s car and hope to find it in a few days. The network puts the SIM to sleep so nobody can make calls or use your balance, but you can easily unblock the exact same physical chip later by calling the helpline once you find your phone.
- Permanent Termination / Disownership: Choose this option if you are certain your phone is permanently stolen, or if you want to completely get rid of an old number you no longer wish to pay for. Once a SIM is permanently terminated and disowned from your CNIC, you cannot reverse the process, and the number will eventually be recycled and sold to someone else after six months.
Frequently Asked Questions
Lost or stolen your Telenor SIM? Here are the most common questions about blocking a Telenor SIM, securing your mobile number, and getting a replacement SIM.


