A mobile carrier's staff helps users verify their information at a transaction point in the southern Cà Mau Province. — VNA/VNS Photo Kim Há

HÀ NỘI — Vietnam Telecommunications Authority said that approximately 498,000 mobile phone subscribers had verified their information, leaving nearly 1.17 million SIM cards two-way locked. 

When the SIM cards are two-way locked, users are not able to verify their information through service providers’ applications and websites, but instead have to bring their personal identification documents to the carriers’ transaction points to complete the process. 

The action follows a plan of the Ministry of Information and Communications to manage subscriptions and eradicate unverified SIM cards, spam calls and messages, while preventing risks to mobile phone users. 

Subscribers with unverified information will have their mobile phone numbers withdrawn on May 15. — VNS