The Pakistan Telecommunication Authority (PTA) has started blocking WhatsApp accounts registered with inactive or cancelled SIM cards. The move is aimed at protecting mobile users from fraud, identity misuse, and unauthorised access to personal accounts.
The development is important for millions of WhatsApp users across Pakistan who may still be using accounts connected to old mobile numbers they no longer own or use.
According to reports published in October 2026, PTA officials confirmed that the blocking process had started following an awareness campaign encouraging users to keep their WhatsApp accounts connected to active mobile numbers.
Why Is PTA Blocking WhatsApp Accounts?
The main reason behind this decision is the growing risk of mobile number misuse.
When a SIM card becomes inactive or is permanently cancelled, the mobile number may eventually be issued to another customer under the telecom operator's procedures.
If the previous owner still has a WhatsApp account registered with that number, security problems can arise.
For example, a new subscriber may receive verification messages for a number previously used by someone else. This can create opportunities for account misuse and unauthorised access.
PTA wants users to maintain control over the mobile numbers connected to their WhatsApp accounts.
Who Could Lose Access to WhatsApp?
The action mainly concerns users whose WhatsApp accounts are connected to inactive, cancelled, or no-longer-used SIM cards.
The following users should pay particular attention:
People who have stopped using their old mobile numbers.
Users whose SIM cards have been permanently cancelled.
People who changed their mobile numbers but did not update WhatsApp.
Overseas Pakistanis whose Pakistani SIM cards are no longer active.
Business owners using old mobile numbers for customer communication.
Users with active SIM cards that remain in their possession are not the group specifically targeted by this reported action.
How to Protect Your WhatsApp Account
WhatsApp users can take a few practical steps to reduce the risk of losing access to their accounts.
Step 1: Check Your SIM Card
Contact your mobile network operator to confirm that your SIM card is active.
Step 2: Check Your WhatsApp Number
Open WhatsApp and go to Settings. Tap your profile to check which mobile number is registered.
Step 3: Change Your WhatsApp Number
If you have started using a new mobile number, use WhatsApp's Change Number feature.
Open WhatsApp.
Go to Settings.
Select Account.
Tap Change Number.
Enter your old and new mobile numbers.
Follow the verification instructions.
Step 4: Keep Your Number Secure
Use a mobile number that you personally control and can access whenever WhatsApp requires verification.
What About Overseas Pakistanis?
Overseas Pakistanis may face additional difficulties because some users keep their Pakistani SIM cards while living abroad.
If their SIM cards become inactive or are cancelled, their WhatsApp accounts could be affected.
Such users should contact their Pakistani mobile network operators to confirm their SIM status and available options for maintaining the number.
They should not assume that simply keeping WhatsApp installed on a phone will protect an account linked to a cancelled number.
Will PTA Block All WhatsApp Accounts?
No. The reported action specifically concerns WhatsApp accounts linked to inactive or cancelled SIM cards.
Users who maintain active mobile numbers that they control should not assume that their accounts will automatically be blocked.
However, the available reports do not specify the total number of accounts affected, the complete blocking criteria, or a detailed account recovery process.
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