The Biometric Verification System (BVS) was introduced after several mobile phone connections issued to unknown persons were used in several terrorist attacks in the country, forcing authorities to go for mandatory verification in December following the Taliban attack that killed about 150 school students in Peshawar.
The ministry of information said in a statement that May 15 was last date for verification of SIM cards.
"Out of target 103 million active SIMs, 75.5 million SIMs have been re-verified while 27.5 million active SIMs have been blocked," it said.
Extensive awareness campaigns through SMS, electronic (TV and radio) and digital media were run.
Also Read
In addition, an alternate verification process was deployed to facilitate the aged, disabled and overseas Pakistanis.
Initially, MoIT and PTA were tasked to carry-out verification of all existing SIMs through BVS in January 2015 but later it was extended till April 12.
The process was again extended for certain categories till May 15 and now has been finally completed.
Officials believe that the re-verification drive will check the use of SIM cards for militant activities.