1. Do not understand June 15 as a simultaneous SIM lock date
This is the most common mistake today. According to Circular 08/2026/TT-BKHCN, June 15, 2026 is only the end of the 60-day transition period from the date the circular takes effect.
In the period from April 16 to June 15, telecommunications enterprises are responsible for reviewing data, comparing subscriber information with the national population database, and at the same time notifying cases that need verification or updating information.
After June 15, network operators will not lock SIM cards in large numbers but will start applying the handling roadmap for subscribers who have been notified but have not completed verification according to regulations.
Accordingly, the processing process will be carried out step by step. First, the network operator continues to send a notice requesting information updates. If users do not comply within the prescribed time limit, the subscriber may be restricted in one direction, then restricted in two directions and finally terminated from providing services according to the legal roadmap.
In fact, some users have been restricted from one-way communication before June 15. The reason is that these subscribers have been in the area to standardize information from previous reviews or have received many notifications from network operators but have not updated as required.
This means that June 15th is not the "deadline" that causes all unverified SIMs to be locked immediately. Users only need to pay attention to official notifications from the network operator and carry out verification when they are required.
2. If it is already one-way locked, pay special attention to the 60-day mark.
For subscribers who have been temporarily suspended from one-way service: The two-way locking time does not start from June 15 but starts from the date the subscriber is locked in one-way.
For example: Being locked in one direction on May 10 → about July 9-10 may be locked in two directions (after about 60 days) → if continuing without authentication → about 5 days later the number may be revoked.
This is the milestone that many people easily miss.
3. Switching phones after June 15 may arise authentication requirements for some subscribers
According to Circular 08/2026/TT-BKHCN, from after June 15, 2026, telecommunications enterprises are allowed to apply the authentication process for cases of changing terminal devices according to regulations. However, this does not mean that all users who change phones must re-authentize or have their SIMs locked.
In fact, supplementary authentication mainly applies to subscribers who need to be reviewed or need to compare information when the system detects changes in SIM-carrying devices.
For subscribers who have completed verification, the information is valid and used normally, switching the SIM to a new phone does not automatically mean that the service is locked or the entire verification process must be re-implemented from the beginning.
4. Proactively check phone numbers that are in VNeID
Many people think that they only use one phone number, so they do not need to check. However, the recent review recorded many cases of detecting other SIMs being in their names.
Users should regularly check VNeID to confirm the numbers they are using; detect strange subscribers if any; avoid missing authentication requests from network operators.
5. Don't miss messages from network operators
Many cases of being blocked one-way said that they had received notifications before but thought they were advertising messages or regular notifications, so they did not pay attention.
According to telecommunications businesses, most processing procedures are notified to users in advance. Missing messages can cause subscribers to have their services interrupted even though they were still using normally before.
6. Only authenticate through official channels
Along with the subscriber authentication process, recently many forms of impersonating network operators have also appeared to steal personal information of users.
Telecommunications businesses recommend that people only carry out authentication through the official application of the network operator, the VNeID application or directly at transaction points. Users should not access strange links sent via messages, emails or social networks, and should not provide OTP codes, personal information or photos of personal papers to organizations and individuals of unknown identity to avoid the risk of being scammed.
