If your phone is lost or stolen, block the SIM first. Call your network’s helpline (Jazz 111, Zong 310, Telenor 345, Ufone 333) from any phone and ask them to block it, or visit the nearest franchise with your original CNIC. Blocking stops calls, SMS and mobile data, and your number can be restored later on a duplicate SIM.
Last verified: November 2026. Helpline numbers and the franchise process below are the standard routes for all four networks. Do not share your CNIC details or verification codes with anyone who calls you claiming to be your network — only call the helpline yourself.
Quick answer — how to block your SIM on each network
| Operator | Fastest way to block | Helpline | What you need |
|---|---|---|---|
| Jazz | Call the helpline | 111 | Your CNIC details for identity verification |
| Zong | Call the helpline | 310 | Your CNIC details for identity verification |
| Telenor | Call the helpline | 345 | Your CNIC details for identity verification |
| Ufone | Call the helpline | 333 | Your CNIC details for identity verification |
Jazz: call 111
Call 111 from any phone and tell the helpline your Jazz number has been lost or stolen and you want the SIM blocked. They will ask questions to verify the number is yours, so keep your CNIC details ready. Once blocked, no calls, SMS or mobile data work on that SIM. See the verified Jazz bundle figures on our Jazz internet packages page.
Zong: call 310
Call 310 from any phone and ask them to block your Zong SIM, giving the number and your CNIC details for verification. If you cannot reach the helpline, visit a Zong franchise or service centre with your original CNIC and ask for the SIM to be blocked. See the verified Zong bundle figures on our Zong internet packages page.
Telenor: call 345
Call 345 from any phone and ask them to block your Telenor SIM, giving the number and your CNIC details for verification. You can also visit a Telenor franchise with your original CNIC. See what is verified on our Telenor internet packages page.
Ufone: call 333
Call 333 from any phone and ask them to block your Ufone SIM, giving the number and your CNIC details for verification. A Ufone franchise can do the same if you take your original CNIC. See the verified Ufone bundle figures on our Ufone internet packages page.
What happens when your SIM is blocked
- No one can make or receive calls, send or receive SMS, or use mobile data on that SIM.
- The number stays registered in your name — blocking suspends the SIM, it does not cancel the number.
- Anyone who finds the phone cannot use your number for calls or for SMS verification codes.
- Your mobile banking and other accounts tied to the number are protected from SIM misuse while the block is active — still change important passwords and contact your bank if the phone itself was stolen.
How to get your number back
Visit your network’s franchise or service centre with your original CNIC. After biometric verification, you are issued a duplicate SIM with the same number, and your service is restored on the new SIM. Take the CNIC the number is registered under — a photocopy or someone else’s CNIC will not work. Compare plans for the restored SIM on the Pakistan mobile packages hub.
Also block WhatsApp on the lost phone
Your SIM block stops SMS codes, but WhatsApp on the lost phone can still work over Wi-Fi. Email WhatsApp support at support@whatsapp.com from any email account with the subject “Lost/Stolen: Please deactivate my account” and your phone number in full international format. WhatsApp will deactivate the account, and you can reactivate it on your duplicate SIM with the same number.
Check which SIMs are on your CNIC
While you are sorting this out, check that no extra SIMs are registered on your CNIC. Text your CNIC number (without dashes) to 668 — PTA’s SIM check replies with every SIM registered on your CNIC across all networks. If you see a number you do not recognise, report it to the network’s helpline. If you only need to find your own number first, see our how to check your own mobile number guide.
FAQs
Can I block my SIM without my CNIC?
You will need to prove the number is yours. The helpline will ask identity questions, and a franchise will ask for your original CNIC. Keep your CNIC number ready before you call — without it, the network cannot be sure the number belongs to you and may refuse the block.
Will blocking my SIM delete my number or my packages?
No. Blocking only suspends the SIM — the number stays registered in your name. Get a duplicate SIM at a franchise with your original CNIC and the same number works again. Check what is left on it afterwards with our how to check remaining MBs and balance guide.
How do I get my number back after blocking it?
Visit your network’s franchise or service centre with the original CNIC the number is registered under. After biometric verification you are issued a duplicate SIM with the same number. Your bundles can then be managed as before — see our operator apps guide or the how to unsubscribe any package guide if you want to stop a bundle.
My phone was stolen — should I report it to the police?
Yes. Block the SIM first, then report the theft to the police with the phone’s IMEI number (find it on the box or your purchase receipt). A police report helps if the phone is misused, and it is also useful for insurance or recovery claims. If you share credit between SIMs, see our how to share balance guide.
