Pakistan's Telecommunication Authority (PTA) says that it has ordered the blocking of 3.5 million SIM cards that had not been re-registered by their users with the mobile networks.
To cope with the order, the operators are being allowed to block accounts in batches of up to 875,000 SIM cards per week until they have blocked all the accounts that had not complied with an order to re-verify their ownership details with the networks.
Although identity is needed to buy a SIM card, the regulator ordered a re-verification process for all accounts after it said too many had wrong details or information that was out of date.The blocked SIM cards will however be able to make a call to a single number, 789 to verify the users details with the mobile networks and get their service restored.The 789 system is an automated real time verification system where a customer has to verify his details through NADRA's database by answering mandatory secret questions i.e. mother's name and place of birth so as to re-activate the SIM.
Users have one week from being blocked to re-verify their details, after which the SIM card will be completely disabled.
Source: Cellular News