VinaPhone customer service phone number — complete, practical guide

Overview and what the service covers

VinaPhone is one of Vietnam’s three national mobile operators; its customer service handles account management, billing disputes, SIM and device support, value-added services, and business contracts. For routine tasks — balance checks, top-ups, tariff changes — the operator provides automated shortcodes and self‑service channels. For account security, SIM registration, portability and billing disputes, live-agent contact is usually required and is routed through the official customer care lines below.

Because telecom regulations and service details change over time, the exact process and available options evolve; this guide is written to reflect practical procedures you can use right now (as of 2025). When precise local procedures differ, the official VinaPhone website (vinaphone.com.vn) and in-center notices are the authoritative sources for final verification.

Primary customer service numbers and how to use them

Main short code for VinaPhone subscribers: 9191. Dial 9191 from any VinaPhone mobile for direct access to customer care — this short code connects you to voice menus and the option to speak to a live consultant. The short code is designed to be fast: automated services handle balance, data usage and simple service activations in under 2 minutes; choose “0” or wait on the menu to reach an agent for complex issues.

Alternative national hotline: 1800 1091 (toll-free within Vietnam for landlines and many fixed networks). Many customers report that calling 1800 1091 from other carriers routes you to centralized support for cross-network issues. For best results, have your VinaPhone number and registered ID ready so agents can verify your identity quickly.

Hours, expected wait times and performance

VinaPhone hotlines operate 24/7 for critical issues (loss/theft and network outages), with extended business‑hour staffing for billing and contract services. Typical live‑agent availability is strongest between 08:00–20:00 local time on weekdays. Outside those windows, automated systems still process common requests immediately.

Realistic wait-time expectations: outside major promotions or holiday periods, average hold time to a live agent ranges from 2 to 15 minutes; during large national events or launches it can rise to 30–60 minutes. Preparing your account details in advance (see the checklist below) frequently reduces total call time by 30–50% and increases first-call resolution rates.

Calling from abroad, alternate contact channels and web resources

If you are outside Vietnam and need to reach VinaPhone, the most reliable method is the official website vinaphone.com.vn and the online contact form on the “Contact” page. The site lists up‑to‑date phone numbers for international inquiries, corporate accounts, and press relations. In many cases, international callers are asked to use the online form or email to attach documents that an overseas call cannot transmit securely.

VinaPhone also maintains verified social channels (Facebook, Zalo, and a presence on Google Play/App Store) that publish service notices and promotions. For business customers there are dedicated account managers; request direct-dial support when you sign a business contract to get an assigned number and SLA (service-level agreement) with guaranteed response times.

In-person support locations and official addresses

VinaPhone’s customer care and corporate functions are administered under VNPT (Vietnam Posts and Telecommunications Group). The head office is located in Hanoi; a commonly referenced address is 57 Huỳnh Thúc Kháng, Đống Đa District, Hanoi — this address is useful for sending certified letters, contract documents or identity copies when phone verification is insufficient. Always check the site or call before visiting, since some functions require appointments.

Major regional customer care centers exist in Ho Chi Minh City and provincial capitals; store hours for physical centers typically run 08:00–17:00 Monday–Saturday. In-person visits are recommended for complex issues such as legal disputes, corporate contract signings, or when a replacement SIM must be issued against a national ID; bring original ID and a copy of your contract if applicable.

What to prepare before you call (checklist)

• Exact VinaPhone number(s) affected (e.g., 091-xxx-xxxx); list any secondary numbers.
• Government-issued ID used for SIM registration (ID card, passport) — have the number and issue date ready.
• Last top-up amount(s) and transaction references (examples: VND 50,000 on 2025-02-14, ref 123456789) or recent invoice number.
• SIM ICCID or device IMEI if reporting theft/loss or requesting a SIM swap.
• Contract number or company tax code for business accounts; email used for billing and any prior ticket/reference numbers.

Digital self-service, apps and reducing call time

VinaPhone’s website and official mobile apps provide immediate access to balance, usage, top-up, tariff changes and support ticket tracking. For common actions (recharges of VND 50,000 / 100,000 / 200,000, activating roaming, adding data packages), the self-service portal usually completes the operation in under 60 seconds and avoids queue times entirely. Always update the app to the latest version for security patches and new features.

Practical tips to reduce hold time: use the short code 9191 for immediate ID-verified service on your mobile, submit screenshots or PDF attachments through the contact form before calling if documentation is required, and ask for a ticket/reference number at the end of each interaction. If you have a business contract, escalate to your account manager and reference the SLA terms (for example: response within 4 hours for critical faults) to obtain prioritized handling.

How is Vinaphone in Vietnam?

Vinaphone: A Trusted and Reliable Option. Vinaphone, another major Vietnam mobile networks, is well-known for offering great value for money. While its coverage is not as extensive as Viettel’s, Vinaphone still provides reliable service, especially in major cities and popular tourist destinations.

How to check airtime balance on phone?

Conclusion. Checking your airtime balance on MTN, GLO, Airtel, or 9Mobile is simpler with the new USSD code, *310#, which works across all networks. You can also check by SMS or mobile apps, visit the network websites, or contact customer care.

Who owns VinaPhone?

Vietnam Posts and Telecommunications GroupVinaphone / Parent organization
Vietnam Posts and Telecommunications Group is a telecommunications company, owned by the Vietnamese Government, and the national post office of Vietnam. It owns Vinaphone, one of the three largest mobile network operators in Vietnam.

How do I find my VinaPhone number?

Call VinaPhone hotline: 900 and press key 4. Then the system will automatically reply to let you know what your current VinaPhone phone number is.

How much is a Vinaphone SIM card?

about $2 USD
A basic Vinaphone SIM card without any credit often costs from 35,000 to 50,000 VND (about $2 USD).

How to check airtime balance on Vinaphone?

Check balance by *101# and validity by *102#. There are different stater packs called VinaCard or similar. It doesn’t make a difference which you choose for data as all have the same data packs.