PakistanUnregistered SIMs will be blocked by 17th May: PTASaeed AbbasiMay 5, 2011May 5, 2011 by Saeed AbbasiMay 5, 2011May 5, 2011 Karachi: Chairman Pakistan Telecommunication Authority (PTA) Dr. Mohammad Yaseen has said that unregistered SIMs will be blocked by 17th May 2011and SIMs verification process through...