Receiving an SMS or a notification in the True App does not necessarily mean that your previous registration was incorrect. It is an invitation to review and update your registration information to ensure it remains current and compliant with NBTC requirements.

Registration information or supporting documents submitted in the past may require additional verification to keep customer records up to date.

Please check your registration status by dialing *165*6#

• Registration Documents Complete → No further action is required.
• Registration Document Incomplete → Please follow the update instructions provided by the system.
• Document Under Review/Checking your document → Your information has been received and is currently being reviewed. The review process normally takes about 7 days. Please check your status again later.

Update your information via True App :
https://s.true.th/3aCz/updatedocument

If you receive SMS notifications for more than one mobile number, please check the registration status of each number by dialing *165*6# or through True App > Update Registration Document.

The True App will display all mobile numbers registered under your Thai ID Card or Passport (up to 50 True and dtac numbers combined).

https://s.true.th/3aCz/updatedocument
If any number shows "Registration Document Incomplete", please follow the update process provided by the system.

No. Please check your registration status by dialing *165*6#.

• Registration Documents Complete → No further action is required.
• Registration Document Incomplete → Please follow the update instructions provided by the system.
• Document Under Review/Checking your document → Your information has been received and is currently being reviewed. The review process normally takes about 7 days. Please check your status again later.

You can check your registration status by dialing *165*6#

The system will display one of the following statuses:

1. Registration Document Complete: Your registration is complete, and no further action is required.

2. Registration Document Incomplete: Your registration information or supporting documents require an update. Please follow the instructions provided by the system to complete your registration update.

3. Document Under Review/Checking your document: Your information has been received and is currently being reviewed. The review process normally takes about 7 days. Please check your status again later.

Receiving this SMS does not mean your previous registration was incorrect. This initiative is part of an effort to keep customer registration information accurate and up to date in accordance with NBTC requirements.

Please check your registration status by dialing *165*6#. If your status shows "Registration Documents Complete," no further action is required.

To ensure your registration information remains accurate, up to date, and compliant with NBTC requirements, while allowing you to continue enjoying services and customer benefits without interruption.

We strongly recommend updating your registration information if required to ensure it remains accurate and compliant with NBTC requirements. This helps minimize the risk of service restrictions or interruptions in the future.

Please check your status by dialing *165*6#.

Yes. This initiative supports NBTC requirements to maintain accurate and up-to-date customer registration information. It also helps verify user identity and reduce the risk of mobile numbers being used improperly.

No. SMS notifications are sent only to selected customers who are requested to update their registration information.

If you receive an SMS, please check your registration status by dialing *165*6# and follow the instructions shown.

This applies to both Prepaid and Postpaid customers.
However, only customers who receive an SMS notification are requested to update their registration information.

For SIMs registered under an individual, we recommend that the actual user check the registration status via *165*6# and update the information as required so that the registration record matches the current user.

For SIMs registered under a company or corporate account, the True App currently does not support registration updates. Please contact your Account Executive or:

• True Business Contact Center: 1239
• dtac Business Contact Center: 1431

For individual customers whose mobile numbers are registered using corporate documents (Corporate Individual), the Company is currently preparing an appropriate process to support this customer segment. Please wait for an SMS notification with further details and instructions.

The mobile number may have been previously registered under your name, or our records may still identify you as the registered owner.

Please check the registration status and update the information if required.

If you are certain that the number does not belong to you, is no longer under your possession, or is currently being used by someone else, please visit a True-dtac Shop for assistance and verification.

Please verify that the SMS comes from official True or dtac communication channels. Any links provided by the company will use official company domains.
True and dtac will “NOT” ask for:

• OTP
• Password
• PIN
• Credit card information
• Money transfers

If you are unsure, please verify your status by dialing *165*6# or visit a True-dtac Shop.

Please visit any True Shop or dtac Shop with your original identification document. Our Shop staff will assist you with identity verification and registration updates.

Thai Customers

• Thai National ID Card (Prepaid & Postpaid)

Foreign Customers

• Passport (Prepaid & Postpaid)
• Pink Card (Prepaid only)
• White Card/10-Year Hill Tribe Card (Prepaid only)
• CI Book -Green Book (Prepaid only)
• TD (Prepaid only)

For holders of a 10-Year Hill Tribe Card, CI, or TD, additional documents may be required, such as:

• Work Permit
• Driving License
• Migrant Employment Notification
• Medical Certificate
• Social Security Card
• Health Insurance Card

Note: The True App currently supports registration updates using Thai National ID Cards and Passports only. For other document types, please visit a True-dtac Shop or authorized dealer.

Yes. Both foreign and Thai customers can check their registration status by dialing *165*6# or through True App > Update Registration Document, even while roaming outside Thailand.

https://s.true.th/3aCz/updatedocument

Registration updates via the True App currently support only Thai National ID Cards and Passports.

The service can be accessed using a regular internet connection or Wi‑Fi. VPN connections are not supported.

If you have more than 50 registered mobile numbers, the True App will not be able to display all numbers.

Please prepare the list of mobile numbers you would like to verify and visit a True-dtac Shop, where staff can assist you with registration verification and updates

If you have already updated your registration information, you may disregard the SMS.

The SMS recipient list may have been prepared before your most recent update was completed. We apologize for any confusion this may cause. You can verify your latest status by dialing *165*6#.

Once your information has been submitted successfully, your status will be changed, and the document verification typically takes approximately 7 days. You may check your status again via:

• *165*6# : Document Under Review
• True App > Update Registration Document or https://s.true.th/3aCz/updatedocument : Checking your document

1. Make sure you are using True App version 11.0903.0 or later.
   • Home Page → Profile Icon (top right) → My Profile → App Version
2. Access the menu via:
   • Home Page → View All → Update Registration Document

If you are already using the latest version and still cannot find the menu, please contact Customer Service or visit a True-dtac Shop for assistance.

The True App will display all numbers registered under your ID Card or Passport (up to 50 numbers).
Status options:

• Registration Documents Complete → No further action is required.
• Registration Document Incomplete → Please follow the update instructions provided by the system.
• Checking your document → Your information has been received and is currently being reviewed. The review process normally takes about 7 days. Please check your status again later.

Update Steps

1. Review the numbers displayed in the system.
2. Select "Update Registration Documents"
3. Complete identity verification (eKYC / Liveness Detection).
4. Follow the on-screen instructions.
5. Submit the information.

Once submitted, your status will change to "Checking your document"

If you identify a number that does not belong to you, you can untick that number. The system will display: “If there are any numbers you’d like to review further, please uncheck them"

After you submitted “Update registration documents”, the system will alert the untick number

"This number will be recorded for further review. The registration update process will continue as scheduled."

Note: Unticking a number does not cancel or remove it from the registration update process. Please visit a True-dtac Shop within 7 days for further verification. Otherwise, the registration update process will continue automatically.