If your WhatsApp account is still registered on a mobile number whose SIM you no longer use, this is the week to fix it. PTA officials, as reported by ProPakistani and TechJuice on 28 October 2026, say the Pakistan Telecommunication Authority has now started blocking WhatsApp accounts linked to inactive SIM cards. The point of the action is simple: a phone number that nobody controls any more should not stay attached to a live WhatsApp account.
This is not a warning about something that might happen in the future. According to the reports, the blocking has started, and it follows an awareness campaign in which PTA urged users to keep their WhatsApp accounts registered with an active mobile number they currently own and control. If that description does not match your account, the safe move is to update your registration now, while you still have access, rather than waiting until you are locked out.
What PTA has started doing
PTA’s message, as reported on 28 October 2026, is that WhatsApp accounts linked to inactive SIMs are being blocked to prevent misuse of numbers that are no longer controlled by their original users. The action follows a PTA awareness campaign with the same advice: check your SIM status, and if your previously linked SIM has been deactivated, cancelled, or is simply no longer in use, update your WhatsApp registration.
Users who have changed their number are advised to use WhatsApp’s Change Number feature to transfer the account to their current number. That is the core of the advice, and it is worth acting on quickly. Once an account is blocked, your options narrow sharply, and neither report describes a PTA appeal or restore process for an already-blocked WhatsApp account. The time to act is before the block, not after it.
It is important to be honest about what the reports do and do not say. No PTA press-release text was published alongside these reports, and this article attributes the action to PTA officials as reported by ProPakistani and TechJuice on 28 October 2026. Neither report explains exactly how the blocking is technically enforced, how many accounts are affected, or whether any grace period applies. This article invents none of those details. What is documented is the action itself, the reason behind it, and the advice to users — and that is enough to act on.
Why an inactive SIM puts your WhatsApp at risk
The risk is not about the SIM card sitting in a drawer. It is about what happens to the number itself. When a SIM stays inactive long enough, the operator may eventually reissue that number to another subscriber. If your WhatsApp account is still linked to that number, the new owner of the number could receive verification codes for it, and you could lose control of the account or face unauthorised access to it.
This is the same reason regulators everywhere treat recycled numbers as a security problem. Your WhatsApp account is tied to a phone number, not to your phone or your name alone. As long as the number is yours and active, the link protects you. Once the number stops being yours, the same link becomes a weakness, because whoever controls the number next controls the key to that account.
That is also why the advice is not “keep using WhatsApp on Wi-Fi and ignore the SIM.” WhatsApp can keep working on Wi-Fi long after a SIM dies, which makes it easy to miss the problem entirely. The account looks fine, the chats are all there, and nothing seems wrong — until the number is reassigned or the account is blocked. The check described below takes a few minutes, and it is the only way to be sure.
Are you at risk? Check yourself against this table
| Your situation | Risk level | What to do |
|---|---|---|
| WhatsApp number’s SIM is active, in your phone, and registered in your name | Safe | Nothing urgent, but re-check if you ever change numbers |
| You changed numbers but WhatsApp still uses the old number | At risk | Use Change Number to move to your current number now |
| The old SIM is lost, damaged, deactivated, or cancelled | At risk | Register WhatsApp with your current active number |
| You use WhatsApp only on Wi-Fi and the SIM is long dead | At risk | Do not rely on the old number; move the account now |
| You are unsure which number your WhatsApp uses | Unknown | Check the number in WhatsApp settings first, then check the SIM |
If any row other than the first describes you, treat this as urgent. The rest of this guide walks through the check and the fix step by step.
How to check whether your SIM is still active and in your name
Start inside WhatsApp. Open Settings, tap your profile, and look at the phone number shown there. That is the number your account is tied to. Now ask yourself three questions: is that SIM currently in a phone you control, can it receive calls and SMS, and is it registered in your name?
Next, check the SIMs registered against your CNIC. The established PTA SIM-count check is to send an SMS with your CNIC number, without dashes, to 668. The reply lists the SIMs registered in your name. This check tells you about SIM registration, which is the root question here: if the number your WhatsApp uses does not appear as an active SIM in your name, you have a problem to fix. If you are still unsure after the SMS check, visit your operator’s franchise with your CNIC and ask them to confirm the status of that number directly.
PTA’s helpline 0800-55055 is available for SIM-status complaints. Note carefully what that means: it is a channel for complaints about SIM status, not a stated WhatsApp-account restore channel. If your SIM status is wrong — for example, a SIM you own shows as inactive, or a number you gave up still shows in your name — that is the kind of issue the helpline exists for. It is not a route the reports describe for getting a blocked WhatsApp account back.
If your SIM is inactive, update your WhatsApp registration now
If you still have access to your WhatsApp account and you have a current, active number, the fix is WhatsApp’s Change Number feature. In brief, the steps are: open Settings, go to Account, tap Change number, tap Next, enter your old number, then enter your new number, and verify the new number with the code sent to it. Your chats and groups move to the new number with the account.
Those steps are deliberately brief here. A full step-by-step guide to changing your WhatsApp number without losing chats already exists on this site (the art 71 guide), and readers who want every screen explained should follow that guide. The important point for this article is the timing: do the change while you still control the account. Change Number is a tool for people who still have access. It is not a rescue route after a block.
If you changed numbers months ago and never updated WhatsApp, do not assume the old account is safe just because it still opens. That is exactly the situation PTA’s action targets: an account registered on a number its owner no longer controls. Move it to your current number now, and make sure the new number’s SIM is active and in your name before you start.
If you no longer have the old SIM at all
This is the hardest case, and honesty matters more than comfort here. If the old SIM is gone — lost, cancelled, or deactivated — you cannot rely on receiving a verification code on the old number. Codes sent to a number you do not control may go to whoever holds that number now, and you should never ask someone else for a code sent to their number or share codes with anyone.
The documented route in this situation is to register WhatsApp with your current active number, a number you own and control today. That means starting from the number you actually use, not clinging to an old number you can no longer verify. Your chat history tied to the old number may not carry over in every case, which is painful, but it is far better than leaving an account attached to a number someone else may soon control.
If you are already locked out of the account, the same advice applies, with one hard truth attached: neither the ProPakistani nor the TechJuice report describes a PTA appeal or restore process for an already-blocked WhatsApp account. This article will not invent one. Do not pay anyone who claims they can unblock the account for a fee, and do not trust any website or agent promising a shortcut. Re-registering with an active number you control is the only route the reports support. If your SIM status itself is wrong, raise that as a SIM-status complaint through the proper channel, PTA helpline 0800-55055, and keep your expectations honest: that channel is for SIM status, not a promised WhatsApp restore.
What this action is not
A few lookalike stories are circulating, and mixing them up leads to the wrong fix, so here is how this action differs from each of them.
First, this is not the same as PTA’s SIM-blocking rules. An earlier PTA notification, SRO 1519(I)/2026, deals with SIMs themselves being blocked — for example, SIMs linked to a deceased person’s CNIC after a transfer window, or SIMs on cancelled CNICs. That is about the SIM card being switched off. This new action is about the WhatsApp account attached to an inactive SIM being blocked. The two actions are related, because both start from inactive or invalid SIMs, but they are not the same thing, and fixing one does not automatically fix the other. If your SIM was blocked under those rules, you still need to sort out your WhatsApp registration separately.
Second, this is not one operator’s complaint story. An earlier report about a Jazz customer’s SIMs being blocked abroad was a single user’s case, not a regulator-wide action. The inactive-SIM WhatsApp blocking reported on 28 October 2026 is described as a PTA action, not one operator’s decision and not one person’s complaint.
Third, this is not the old-phone login block. A separate recent issue stops WhatsApp logins on outdated iOS and Android versions, where the trigger is old software. Here the trigger is an inactive SIM, whatever phone you use. Updating your phone’s software will not fix an inactive-SIM problem, and changing your number will not fix an old-OS problem. Check which one applies to you before acting.
Fourth, this is not the National CERT WhatsApp Web advisory, which warns about malicious files and links on WhatsApp Web. That is a malware threat on the web version of the app. This action is about account registration and SIM status. Both deserve attention, but they need different responses.
What PTA has not said yet
It is worth stating plainly what remains unknown, because guessing would be worse than admitting the gaps. The reports do not say how the blocking is technically carried out, whether WhatsApp itself or the operators do the enforcement, how many accounts have been blocked so far, whether there is any grace period before a block, or what happens to an account after it is blocked. None of that is in the published reports, and this article has not filled those gaps with speculation.
What that means for you is practical: do not wait for a grace period that may not exist, and do not assume a small number of blocks means you are safe. The only safe assumption is the one PTA’s advice already gives you — keep your WhatsApp registered on an active number you own and control, and check now if you are unsure. If PTA or the operators publish more detail later, that detail will matter, and it will be worth checking official announcements rather than viral forwards. Until then, treat forwarded claims about counts, deadlines, or unblock tricks with suspicion.
Quick checklist before you put the phone down
- Confirm the number shown in your WhatsApp profile.
- Confirm that number’s SIM is active, in a phone you control, and in your name — SMS your CNIC without dashes to 668 if you are unsure.
- If the SIM is inactive or the number has changed, move the account to your current active number now, while you still have access.
- If the old SIM is gone, register with your current active number and do not rely on the old number’s codes.
- Never share verification codes with anyone, and never pay anyone promising to unblock an account.
That checklist is the whole response in miniature. The blocking has started, the fix is short, and the cost of waiting is an account you may not get back.
This action was first reported by ProPakistani on 28 October 2026, citing PTA officials, and was corroborated the same day by TechJuice. The background in this article — the awareness campaign, the reassigned-number risk, and the advice to users — comes from those two reports, and where they are silent, this article says so rather than guessing.
FAQs
Will PTA block my WhatsApp if my SIM is active?
No, not on the basis of this action. The blocking reported on 28 October 2026 targets WhatsApp accounts linked to inactive SIM cards. If your WhatsApp number’s SIM is active, in your phone, and registered in your name, you are not the target of this action. The risk appears when the SIM behind the account is deactivated, cancelled, or no longer in use.
I changed my number months ago but WhatsApp still uses the old one. What should I do?
Move the account to your current number now, using WhatsApp’s Change Number feature in Settings, under Account. In brief: enter the old number, then the new number, and verify the new number with its code. Do it while you still have access to the account. For the full step-by-step version, follow the dedicated number-change guide on this site rather than guessing at any screen.
My old SIM is gone and I cannot get its code. Can I keep that WhatsApp account?
Honestly, you cannot verify an account with a number you no longer control, and you should not try to obtain codes sent to a number someone else may now hold. The supported route is to register WhatsApp with your current active number. Neither report describes a PTA restore process for an already-blocked account, so beware of anyone charging a fee to unblock one. If your SIM status itself is incorrect, raise it as a SIM-status complaint on PTA helpline 0800-55055.
Is this the same as PTA blocking SIMs, or the old-phone WhatsApp login block?
No, all three are different. The SIM-blocking rules switch off SIM cards themselves, for example on cancelled CNICs. The old-phone login block stops logins on outdated operating systems. This new action blocks WhatsApp accounts whose linked SIM is inactive, whatever phone you use. Each problem has its own fix, so identify which one applies to you before acting.