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# All network operators in Vietnam # Cheap Viettel digital signature # Cheap FPT digital signature # Cheap BKAV digital signature
Digital signature is an electronic legal tool recognized by the state, helping businesses sign documents, pay taxes, declare customs and issue invoices quickly. This is a legal, secure and convenient alternative to handwritten signatures.
Using digital signatures helps businesses save time, avoid errors, and enhance reputation in all electronic transactions. If you need to register quickly for work, please contact us immediately for full implementation support.
The service of engraving name stamps on request, accurately engraving the name of an individual or organization, designing according to the Digital Signature model not only meets legal requirements but also reduces paperwork, optimizes the signing process, and ensures data security. This is an important tool to help businesses effectively transform digitally.
With digital signature, you can easily sign and send documents online without meeting in person. Your business will be more professional and save operating costs. Contact us now to get a valid digital signature quickly, with on-site installation support.
The market currently has many digital signature providers such as Viettel-CA, VNPT-CA, FPT-CA, NewCA, BKAV-CA... All are licensed by the Ministry of Information and Communications, ensuring legality in transactions.
Each type of digital signature has its own advantages depending on the usage needs. We will advise the optimal solution for your business, from new registration to renewal, ensuring all procedures are quick and valid. Call now for free consultation.
Enterprises need digital signatures to declare taxes electronically, declare customs, bid online, sign electronic contracts, transact with social insurance agencies and issue electronic invoices. This is a mandatory requirement in current management.
If you are still wondering whether digital signature is mandatory or not, the answer is: yes, for most legal activities of enterprises. Do not let your enterprise get into trouble because of lack of digital signature. Contact us now to get it quickly.
Digital signatures are valid for 1 to 3 years, after which they need to be renewed for continued use. Renewing on time will ensure that the tax payment and contract signing process is not interrupted.
We support the renewal of digital signatures for all suppliers quickly, with simple procedures and no time wasted. Let us remind you before your digital signature expires to avoid affecting your work. Register now to renew on time.
Personal digital signatures are often used to sign documents or perform private procedures, while business digital signatures are required for tax declaration, invoice signing, and social insurance payment. Each type has a clear scope of use.
If you are a business owner or sole proprietor, a business digital signature is a must. We provide a full service package, on-site guidance and 24/7 support. Contact us now to get the right type of digital signature.
Online bidding and electronic invoices both require valid digital signatures. This is an authentication tool that helps all transactions be transparent, legal and avoid future disputes.
If your business participates in bidding or issues invoices, digital signature is a mandatory condition. We support from registration, renewal to installation of digital signature software. Please contact us for comprehensive and timely support.
Registering for a digital signature is very simple: just need a business license and ID card/CCCD of the representative. We will complete the procedure for you, issue tokens and provide on-site instructions.
With the full package service, you do not need to worry about complicated paperwork. We support the implementation of digital signatures within a few hours so you can use it immediately. Call the hotline now for the fastest registration.
Digital signatures are secured by advanced encryption technology, ensuring they cannot be forged or modified. All transactions are recognized and protected by law.
We are committed to providing genuine digital signatures, absolute security, and safe installation support. Don't put your business at risk when using poor quality services. Contact us now to get a reputable digital signature.
We provide digital signature services from many major suppliers, support registration, renewal, installation, user guide and 24/7 care. Fast, reputable service, guaranteed legal.
Don't let your business be interrupted just because of the lack of digital signature. Contact us today for quick consultation and registration. We accompany you in all electronic legal procedures.
In the context of digital transformation taking place strongly in Vietnam, digital signature has become an indispensable tool, acting as an "electronic seal" to authenticate identity and ensure the legality of all transactions on the Internet environment. From tax declaration, customs, social insurance to signing electronic contracts and participating in online bidding, owning a valid and secure digital signature is a mandatory requirement for all businesses.
This in-depth report will provide a comprehensive and up-to-date view of the digital signature market in Vietnam in 2025. The content includes a detailed analysis of technology types, updates on the latest legal regulations according to Decree 23/2025/ND-CP, detailed price comparisons from all major suppliers, step-by-step registration and usage instructions, and answers to common technical questions. This is a necessary document to help business owners, chief accountants and managers make decisions on choosing the right digital signature service, optimizing costs and ensuring legal compliance.
This section will introduce the basic concepts of digital signatures, clarify its essential role in business operations, and analyze the two most popular digital signature technologies today to help businesses choose the optimal solution.
A digital signature is a form of electronic signature, created by transforming a data message using an asymmetric cryptographic system. Accordingly, a person who has the original data message and the signer's public key can accurately determine: the above transformation was created with the correct secret key corresponding to the public key in the same key pair; and the integrity of the content of the data message since the above transformation was performed.
Simply put, a digital signature has the same legal value as an individual's handwritten signature or an organization/business seal when conducting electronic transactions. It is an indispensable tool for businesses to perform important tasks such as:
Electronic tax declaration and payment.
Carry out electronic customs procedures.
Electronic social insurance declaration.
Participate in online bidding on the National Bidding Network System.
Sign electronic contracts, electronic invoices, emails and other electronic documents.
Make banking and stock transactions online.
Equipping with digital signatures is not only a legal compliance requirement but also a strategic step to help businesses optimize operational processes, save printing, storage, delivery costs and shorten transaction times, thereby improving competitiveness in the digital economy.
Currently, the market offers two main types of digital signatures with distinct advantages and disadvantages. Choosing which technology is not only a technical issue but also directly affects the efficiency and flexibility of the business.
USB Token Digital Signature
This is the most traditional and popular form of digital signature. The user's private key is securely stored in a hardware device that looks like a USB, called a USB Token. When signing is needed, the user must plug the USB Token into the computer and enter a PIN code to authenticate.
Advantages: High level of security because the secret key is completely within the user's physical control.
Disadvantages: Lack of flexibility, requires a computer and must carry a USB Token. The signing speed is relatively slow, only about 4-5 signatures per minute, and there is a risk of losing, damaging or forgetting the device, causing work interruptions.
Remote Signature (Remote Signature/SmartCA/Cloud-based)
This is a new generation digital signature solution, operating based on cloud computing technology. The secret key is securely stored on the system of the certification service provider (CA) according to high European security standards (eIDAS). Users can perform digital signature anytime, anywhere, on any device (smartphone, tablet, PC) with just an Internet connection, through an application and multi-factor authentication.
Advantages: Extremely flexible and convenient, independent of hardware. Very fast signing speed, up to 2000 signatures per second, suitable for large-volume signing needs. Completely eliminates risks associated with physical device management.
Disadvantage: Requires a stable Internet connection to perform digital signature.
To help businesses make the most appropriate choice, below is a detailed comparison table of the two types of digital signatures.
Table 1: Comprehensive Comparison of USB Token Digital Signature and Remote Digital Signature
| Criteria | USB Token Digital Signature | Remote Signature |
| Device | Physical USB Token required | No hardware required, sign via App/Cloud |
| Flexibility | Depends on the computer with USB plugged in | Sign anytime, anywhere on your phone, tablet, PC |
| Speed of Signature | Slow (about 4-5 signatures/minute) | Very fast (up to 2000 signatures/second) |
| Security | Safe when users keep Tokens carefully | High security according to European standards (eIDAS), multi-factor authentication |
| Risk | Lost, damaged, forgotten USB Token causes work interruption | Stable Internet connection required |
| Initial Cost | Service fee + USB Token purchase fee (about 500,000 VND) | Service fee only, no equipment fee |
| Suitable Object | Businesses work in fixed offices, less travel | Businesses with leaders who travel frequently, sales teams, need to sign large quantities quickly |
The choice between these two technologies reflects the transitional phase of the market. USB Tokens are still a reliable option for businesses with traditional, office-based working models. However, remote digital signatures are clearly the future of electronic transactions, offering superior convenience, speed and scalability. Businesses need to carefully analyze their internal workflows to make smart investment decisions, for example, a consulting firm with experts who travel frequently will benefit greatly from remote digital signatures, while a small manufacturing facility with a single accountant may find USB Tokens sufficient.
Understanding legal regulations is vital to ensuring that all electronic transactions of enterprises are valid. This section will analyze the core changes in Decree 23/2025/ND-CP, helping enterprises prepare and comply with regulations.
On February 21, 2025, the Government issued Decree 23/2025/ND-CP regulating electronic signatures and trusted services. This Decree will officially take effect from April 10, 2025, replacing the previous Decree 130/2018/ND-CP. At the same time, the new Circular on service fees for maintaining the system for checking the status of digital signature certificates will also take effect from April 10, 2025.
The new Decree introduces many important changes to standardize and enhance the safety and reliability of electronic transactions, directly affecting the way digital signatures are managed and used by organizations, individuals and businesses in Vietnam.
One of the most important updates that businesses need to take note of is the change in the validity period of digital certificates, as stipulated in Article 7 of Decree 23/2025/ND-CP. Specifically as follows:
Digital signature certificate from national electronic certification service provider: valid for up to 25 years.
Digital signature certificate for timestamping and data message authentication service: valid for up to 5 years.
Public digital signature certificate (the most common type that businesses are using): has a maximum validity period of 3 years.
This change formalizes the 3-year term as a standard usage cycle for enterprise digital signature service packages. This provides more stability and reliability for businesses when choosing long-term service packages. Instead of viewing the 3-year package as just a cost-saving option, businesses can now be confident that this is a fully legally supported term, making it easier to plan budgets and ensure business continuity.
Decree 23/2025/ND-CP also provides more detailed regulations on the responsibilities of digital signature users and technical standards for digital signature software.
Obligations of the signer before performing digital signature:
Before signing, the user is obliged to check the validity of his digital signature certificate and that of the recipient of the data message through the information systems of the service provider. If the certificate is invalid, the signer is not allowed to perform digital signature. For foreign digital certificates, this check must be performed on both domestic and international systems.
Requirements for digital signature software:
Software used to sign and verify digital signatures must comply with new technical standards, including the following basic functions:
Verify digital signatures and verify certificate validity.
Store and destroy information accompanying signed data messages.
Clearly notify the signer of the signing success or failure status.
These regulations aim to ensure a safer, more transparent and legally binding electronic trading environment.
This is the core section, providing detailed data so that businesses can compare and choose the digital signature service provider (CA) that best suits their needs and budget. The price list is compiled from many sources and updated to ensure transparency and accuracy.
For a quick overview of the market, the two tables below summarize the costs for a 3-year service package - the most popular and optimal term under the new regulations - for businesses.
Table 2: Comparison of New Registration Costs for Digital Signatures for Businesses (3-Year Package)
| Supplier | Reference Price (3 Year Package) | Featured Promotions | Note |
| Viettel-CA | ~1,850,000 VND | High discount price compared to listed price | Reputation, wide network |
| VNPT-CA | ~3,112,000 VND | Free USB Token | Diverse service ecosystem (Social Insurance, Electronic Invoice) |
| FPT-CA | ~1,650,000 VND | Free social insurance software, electronic invoice | Big tech brand, lots of combo deals |
| NewCA | ~1,800,000 VND | Free extra month of use, free electronic invoice | Competitive and attractive pricing policy for new businesses |
| BKAV-CA | ~2,100,000 VND | Cash discount, free electronic invoice | Pioneer in Cyber Security |
| Vina-CA | ~1,790,000 VND | Good discount price, free USB Token | Quick procedure |
| CA2 | ~2,200,000 VND | Free USB Token | Long-term supplier |
Table 3: Comparison of Digital Signature Renewal Costs for Businesses (3-Year Package)
| Supplier | Reference Price (3 Year Package) | Featured Policy | Note |
| Viettel-CA | ~1,690,000 VND - 2,090,000 VND | Competitive price | Good support network |
| VNPT-CA | ~2,912,000 VND | Stable, integrated ecosystem | Suitable for businesses using other VNPT services |
| FPT-CA | ~1,650,000 VND | Exchange old USB Token for free, give away software | Good customer retention policy |
| NewCA | ~1,650,000 VND | Get 6 months extra use | Very good renewal offer |
| BKAV-CA | ~2,100,000 VND | Discount or give away 1000 electronic invoices | Many promotional options |
| Vina-CA | ~1,790,000 VND | Cumulative old term | Simple procedure |
| CA2 | ~2,000,000 VND | Cumulative old term | Stable |
Market analysis shows fierce price competition, however, the initial listed price often does not reflect the true value. Promotional programs such as giving away extra months of use (for example, NewCA gives away 6 months when renewing) or accompanying software packages (FPT-CA, BKAV-CA give away social insurance software, electronic invoices) can bring great economic benefits, especially for newly established businesses. Therefore, businesses need to calculate
Total Value of Ownership, including these incentives, rather than just comparing pure selling price.
Another point worth noting is the difference in pricing strategy between attracting new customers and retaining existing customers. Some providers, such as NewCA, have very attractive policies for businesses switching from another provider. This brings up an important tip:
When a digital signature is about to expire, businesses should not rush to renew it immediately but should take the time to compare "new registration" or "switch" offers from other providers to get the best price and benefits.
For the most detailed and accurate information, below is a detailed price list for each major supplier, classified by subject and duration of use.
Viettel is one of the largest and most prestigious digital signature service providers in Vietnam.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration (Actual Collection) | 1,500,000 VND | 1,700,000 VND | 1,850,000 VND | |
| Extend | 950,000 VND | 1,420,000 VND | 1,690,000 VND | |
Price includes VAT and USB Token. |
| Service Package (Business Household) | one year | 2 Years | 3 Years | |
| New Registration | 1,004,400 VND | 1,453,500 VND | 1,566,000 VND | |
Price includes VAT and USB Token. |
| Service Package (Individual) | one year | 2 Years | 3 Years | |
| New Registration | 1,026,000 VND | 1,366,200 VND | 1,544,400 VND | |
| Extend | 898,364 VND | 1,238,564 VND | 1,416,764 VND | |
Price includes VAT and USB Token. |
VNPT provides a comprehensive digital service ecosystem, including USB Token digital signature (VNPT-CA) and remote digital signature (VNPT SmartCA).
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registrations (Total) | 1,823,000 VND | 2,740,000 VND | 3,112,000 VND | |
| Extend | 1,273,000 VND | 2,191,000 VND | 2,912,000 VND | |
Source: . 10 Price includes VAT. New registration package includes USB Token fee of 550,000 VND. |
| Service Package (Individual) | one year | 2 Years | 3 Years | |
| New Registrations (Total) | 385,000 VND | 550,000 VND | 715,000 VND | |
| Extend | 220,000 VND | 385,000 VND | 550,000 VND | |
Price includes VAT. New registration package includes USB Token fee of 165,000 VND. |
VNPT also provides digital signature combo packages with social insurance software at preferential prices.
FPT is a big technology brand with many attractive promotions.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration | 1,100,000 VND | 1,430,000 VND | 1,650,000 VND | |
| Extend | 880,000 VND | 1,320,000 VND | 1,650,000 VND | |
Price includes VAT and USB Token. 3 year packages often have big promotions. |
| Service Package (Individual/Business Household) | one year | 3 Years | |
| New Registration | 1,094,000 VND | 1,622,000 VND | |
| Extend | 544,000 VND | 1,292,000 VND | |
Price includes VAT. |
NewCA stands out with competitive pricing policies and many additional incentives.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration | 1,300,000 VND | 1,700,000 VND | 1,800,000 VND | |
| Extend | 1,150,000 VND | 1,550,000 VND | 1,650,000 VND | |
| Supplier Conversion | 1,300,000 VND | 1,700,000 VND | 1,800,000 VND | |
The price includes VAT. Packages usually come with an additional 3-6 months of use and electronic invoices. |
BKAV is a pioneer provider of network security in Vietnam.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration | 1,600,000 VND | 2,400,000 VND | 2,100,000 VND | |
| Extend | 1,100,000 VND | 1,800,000 VND | 2,100,000 VND | |
Price includes VAT and USB Token. 3-year package has many valuable promotional options. |
Vina-CA is known for its quick registration process and competitive prices.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration | 1,290,000 VND | 1,590,000 VND | 1,790,000 VND | |
| Extend | 990,000 VND | 1,490,000 VND | 1,790,000 VND | |
Price includes VAT and free USB Token. |
CA2 is one of the first public digital signature certification service providers in Vietnam.
| Service Package (Business) | one year | 2 Years | 3 Years | |
| New Registration | 1,500,000 VND | 1,980,000 VND | 2,200,000 VND | |
| Extend | 990,000 VND | 1,760,000 VND | 2,000,000 VND | |
Payment price includes VAT. |
Once you have selected the right provider and service package, the digital signature registration process is now standardized and quite simple. This section will provide a clear roadmap for businesses to complete the procedure quickly.
Having all the documents ready from the start will help the registration process go smoothly and quickly. Below is a list of the required documents for each category.
For Businesses/Organizations:
Notarized copy of Business Registration Certificate (or Establishment Decision).
Notarized copy of Citizen Identification Card (CCCD) or Passport of the legal representative.
Power of attorney (if the person performing the procedure is not the legal representative)
For individual business households:
The profile is similar to that for businesses.
For Individuals:
Notarized copy of Citizen Identification Card (CCCD) or Passport
The process of registering a digital signature at most providers follows the following 4 basic steps:
Step 1: Choose a Provider and Service Package
Based on the detailed comparison tables in Section 3, businesses choose the provider and package (1, 2, or 3-year term) that best suits their needs and budget.
Step 2: Prepare and Submit Application
Enterprises prepare complete documents according to the checklist above. Currently, there are two main forms of submission:
Submit directly: Bring documents to the supplier's transaction points.
Submit online: Scan or take a photo of the documents and upload them via the supplier's website or send them via email.
Step 3: Verify and Sign Contract
The supplier will verify the validity of the documents. After successful verification, the two parties will sign a service provision contract. The enterprise will pay the service fee according to the selected package.
Step 4: Delivery and Activation
The supplier will hand over the device (USB Token) or account information (for remote digital signature) to the customer. Technical staff will support the installation of necessary software, user manual and activation of digital certificate. After this step, the enterprise's digital signature is ready to use.
The registration process has become highly standardized, so customer experience has become a key competitive factor. Providers such as VNPT are actively promoting their oneSME online registration platform, which allows businesses to complete all procedures without having to visit a transaction counter. For busy business owners, choosing a provider with a completely online, fast registration process is a significant advantage.
Having a digital signature is just the first step. Mastering it on government service portals is where it really comes into its own. This section provides detailed instructions for the three most important applications: Tax, Customs, and Procurement.
This is a popular and mandatory application for most businesses.
Step 1: Prepare the declaration file: Use the Declaration Support Software (HTKK) of the General Department of Taxation to prepare the tax declaration (for example: VAT declaration, CIT declaration...). After completion, export the declaration to a .xml file.
Step 2: Log in to the system: Access the Electronic Tax page http://thuedientu.gdt.gov.vn , select the "Enterprise" subsystem and log in with the enterprise's tax code account.
Step 3: Submit declaration: Go to "Tax declaration", select "Submit XML declaration" and click "Select declaration file" to upload the .xml file prepared in Step 1.
Step 4: Digitally sign and submit: Plug the USB Token into the computer. The system will display a window asking for digital signature confirmation. Enter the correct PIN of the USB Token and click "Accept" or "Sign".
Step 5: Complete: After successfully signing, click the "Submit declaration" button. The system will return a notification that the declaration has been successfully submitted.
Important note: When renewing or reissuing a digital signature, the enterprise will have a new serial number. It is mandatory to update this serial number in the "Account" section on the Electronic Tax page before submitting the declaration to avoid the error "Invalid digital certificate".
For import-export enterprises, registration and use of digital signatures with Customs authorities is mandatory.
Step 1: Prepare the environment:
Browser: The Customs system usually requires the use of Internet Explorer (IE) browser.
Java Software: Install the compatible Java version as required by the General Department of Customs. Normally, it is necessary to remove other Java versions and install the specialized version provided by Customs to avoid conflicts.
Driver Installation: Plug in USB Token and install the supplier's management software (driver)
Step 2: Register digital signature with Customs:
Visit the website of the General Department of Customs (https://www.customs.gov.vn) and find the section "Registering Enterprises using digital signatures".
Fill in the information of Tax code, ID card/CCCD number of the legal representative.
The system will read information from the USB Token. The business needs to confirm and enter the effective date and expiration date of the digital certificate, then click "Register information"
Step 3: Configure on declaration software: Open specialized Customs declaration software (eg: ECUS, CDS Live+), go to system settings and select the correct digital signature provider (eg: VIETTEL-CA) and activate the feature "Apply digital signature when declaring".
Step 4: Sign and transmit the declaration: After creating the declaration on the software, select the "Declare" function. The software will ask you to enter the USB Token PIN to electronically sign the declaration before sending it to the Customs system.
Setting up the technical environment for the Customs system is often more complex than for the Tax system. Businesses need to strictly adhere to software version requirements to ensure successful registration and declaration.
Participating in online bidding requires businesses to register digital certificates on the National Bidding Network System.
Step 1: Preparation:
Fully install USB Token driver.
Install and start the support software (Agent) of the National Bidding Network System (usually has a crane icon)
Step 2: Log in and access: Log in to the contractor's account on the page https://muasamcong.mpi.gov.vn . Then, go to "Personal page"
Step 3: Start registration: Select "Account information and digital certificate", then select the "Register for digital certificate" tab.
Step 4: Select digital certificate: The system will automatically identify the digital certificates in the USB Token plugged into the computer. Select the correct digital certificate of the organization/enterprise.
Important note: The system only accepts digital certificates issued to organizations, not personal digital certificates. If you do not see the digital certificate displayed, please check the type of certificate you have registered.
Step 5: Verify and save: Enter the USB Token PIN to verify. Then, check the information again and click "Save"
Step 6: Two-factor authentication: The system will ask you to enter the authentication code sent via email or from the Google Authenticator app (depending on your account settings). Enter the code and click "Submit" to complete.
Each public service system has its own technical requirements and procedures. Knowing the little "tricks" such as the Java version for Customs or the Agent software for Bidding will help businesses save a lot of time and avoid unnecessary technical errors.
The process of using digital signatures cannot avoid technical problems. This section summarizes the most common errors, frequently asked questions and emergency support contacts to help businesses solve problems quickly.
Below is a summary of common problems and step-by-step troubleshooting instructions.
1. Digital signature not found error / Invalid digital signature
Reason :
Inserted wrong USB Token of another company.
The USB Token driver (management software) is faulty or not installed.
Entered wrong PIN (note to check Vietnamese keyboard or Caps Lock key)
The new serial number of the digital certificate has not been updated on the system (Tax, Social Insurance...) after renewal.
How to fix:
Double check that the USB Token is correct for the company.
Uninstall the old driver and reinstall the latest version from the vendor's website.
Re-enter your PIN carefully.
Log in to your account on the public service portal and update your digital certificate information.
2. Computer error does not recognize USB Token
Reason :
The computer's USB port is faulty.
USB Token driver not installed
Lack of necessary supporting software such as Java, IE Tab (for some old websites)
How to fix:
Try plugging the USB Token into a different USB port.
Install the driver according to the manufacturer's instructions.
Check and install additional software as required by each public service page.
3. Digital signature error is locked
Cause: Entered wrong PIN more than the specified number of times (usually 5-10 times). The system will automatically lock the Token to protect data.
Solution: Contact the supplier's technical support immediately for instructions on the unlocking procedure. Never attempt to enter additional PINs.
4. Error "Digital certificate has not been registered with the tax authority"
Cause: This is a common error after renewing or reissuing a digital signature. The enterprise has a new digital certificate but has not yet updated this information with the Tax authority.
Solution: Log in to thuedientu.gdt.gov.vn, go to "Account Management" -> "Change service information" and update the serial number of the new digital certificate.
Is there a penalty for expired digital signature?
The expiration of the digital signature itself is not subject to any penalty. However, if this leads to delays in submitting tax declarations, customs reports, etc., the enterprise will be penalized according to the provisions of law in that field.
When renewing, will the remaining usage time of the old digital signature be accumulated?
Yes. Most providers have a policy of adding the remaining term of the old digital certificate to the term of the new renewal package.
How to retrieve PIN code if forgotten?
Businesses need to contact the digital signature service provider directly. The provider will perform the owner verification procedure and reissue a new PIN code.
Can a digital signature be used for multiple services (Tax, Customs, Social Insurance)?
Yes. Enterprises only need to register a digital signature and then register that digital signature with each corresponding public service agency to be able to use it for all.
When you encounter technical problems, especially at critical times like the tax deadline, having quick support contact information is invaluable. Below is a list of the official technical support hotlines for major vendors.
Table 4: 24/7 Genuine Technical Support Contact List
| Supplier | Technical Support Hotline | Note |
| Viettel-CA | 1800 8000 (Extension 1) | Free, 24/7 |
| VNPT-CA | 1800 1260 | Free, 24/7 |
| FPT-CA | 1900 6600 | Support during business hours & weekends |
| Vina-CA | 1900 6676 | Chargeable (1,000 VND/minute) |
| NewCA | 1900 2066 | 24/7 Support |
| BKAV-CA | 1900 1854 | 24/7 Support |
| CA2 | 1900 545407 | 24/7 Support |
Providing an official and easily accessible support directory is a demonstration of trust and commitment to accompany customers, helping businesses feel more secure in the process of using the service.
