Vietnam implements mandatory biometric authentication for SIM transfers

Starting June 15, users in Vietnam who transfer a SIM card to a new mobile device must complete biometric facial authentication within two hours to avoid service disruptions. This requirement, outlined in Circular 08/2026/TT-BKHCN, aims to protect subscribers and prevent fraud, such as unauthorized access to banking and e-wallet applications via stolen SIM cards.

Failure to complete authentication within the two-hour window will result in a one-way service block, disabling outgoing calls, messages, and data access. If the issue is not resolved within 30 days of the initial block, a two-way block will be implemented, rendering the phone's telecommunications functions entirely inoperable. After an additional five days of a two-way block, mobile carriers may terminate the contract and permanently revoke the phone number.