01
Never disclose an OTP to an unknown person
Mobile · SIM
Keep SIM and subscriber information secure
Subscriber identity actions belong on official channels. This website never asks for identity documents, passwords or one-time passcodes.
Availability, pricing, equipment and service terms must be confirmed for the exact address and date.
Key considerations
Start with what genuinely matters
Understand safe SIM management, subscriber information and the official path for identity-related support.
02
Update subscriber details only through verified channels
03
Protect the SIM and device with secure access controls
Selection guide
Move from need to a suitable approach
A SIM is tied to identity and may receive authentication codes for other services. If a phone is lost, compromise is suspected or subscriber details need updating, use a Viettel channel you independently verify.
- Never disclose an OTP to an unknown person
- Update subscriber details only through verified channels
- Protect the SIM and device with secure access controls
Details to verify
What to verify before continuing
Do not send identity-document images, card details, passwords or OTPs through this website. Verify the domain and contact source before any account-related action.
FAQ
Questions worth clarifying
Can this website update subscriber identity details?
No. It provides guidance only; identity actions must be completed through a verified official Viettel channel.
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