In order to prevent potential loss, the Pakistan Telecommunication Authority (PTA) has identified and restricted 4,395,566 Subscriber Identity Modules (SIMs) from 2020 to 2022 that are believed to be involved in grey trafficking.

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Gray traffic is essentially the concealment of incoming international telephone calls (traffic), which are terminated on fixed and mobile networks using unauthorised channels and other methods in order to evade taxes and levies, with the addition that biometric verification is connected to the correct issuance of SIMs and is not a specific method to control grey traffic. Additionally, mobile connections and other fixed-line termination channels are used to terminate grey traffic.

According to official documents, the PTA analyzes the traffic data of international incoming calls on a regular basis in order to identify SIMs suspected of being involved in gray traffic.

pon detection, these SIMs are blocked to safeguard against potential loss. Since 2020-22, a total of 4,395,566 such SIMs have been identified and blocked. Whereas, based upon irregularities observed in the issuance of a number of gray SIMs, a fine of Rs. 150 million has also been imposed on the respective cellular mobile operators (CMOs).
However, no CMO itself has been identified as using such SIMs for gray traffic termination, as maintained in the documents.
Official sources revealed that a significant decline has been observed in gray traffic since the deployment of the Web Management Solution (WMS), which blocks voice calls coming through unauthorized gray channels.

Sources revealed that gray trafficking, which has been reduced significantly, could not be ruled out completely despite biometric verification and posed a serious security threat. Gray SIMs are either issued by defrauding people through various means by getting their finger impressions in real-time or by misusing their captured finger impressions on silicon sheets in offline mode.
To curb the menace of gray traffic, the PTA has adopted a comprehensive and multi-faceted approach. Some details are as follows:Strengthening of BVS to minimize misuse; these include the introduction of Live Finger Detect (LFD)-based BVS machines and broadcasting of SIM counts to each subscriber.

Action against violating sale channels by CMOs, including the imposition of fines and the suspension and termination of sale channels.
Action against Cellular Mobile Operators (CMOs) by the PTA. Show-cause notices were served to some mobile operators for the involvement of their sale channels in the issuance of gray SIMs. The cases of the issuance of gray SIMs are regularly shared with the Federal Investigation Agency (FIA).
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