Viettel VN Top Up: How to Recharge Vietnam Prepaid Mobile Credit Online
Viettel is the largest telecommunications network operator in Vietnam, providing voice, SMS, and high-speed mobile internet services to millions of subscribers nationwide. Keeping your prepaid SIM card active requires maintaining a positive account balance. A Viettel VN top up adds credit directly to your prepaid mobile account, extending your SIM card validity period and providing the funds required to make local or international calls, send SMS messages, and register for high-speed mobile internet packages.
BitTopup provides a direct, secure online reload service for Viettel Vietnam subscribers. Whether you are living in Vietnam, traveling as a tourist, or sending credit to family members from abroad, you can complete a mobile recharge in minutes without visiting a local convenience store or physical kiosk.
How to Find Your Viettel Phone Number and Account Info
Before submitting a recharge order, verify the exact Viettel mobile number you want to reload. Vietnam phone numbers typically consist of 10 digits starting with 03, 086, 096, 097, or 098.
To retrieve or confirm your phone number directly on your mobile device:
- Open your phone dialer app.
- Dial
*101#and press the Call button. Your active phone number, main balance, and account expiration date will appear on your screen. - Alternatively, dial
*098#and press Call to view account details and exclusive promotion menus. - Check your physical SIM card frame or contract paperwork if your phone is currently turned off.
When entering your phone number on BitTopup, input the 10-digit standard format (e.g., 098xxxxxxx) or include the Vietnam international country code prefix +84 without the leading zero (e.g., +8498xxxxxxx).
Step-by-Step Guide: Direct Phone Top-Up vs Digital PIN Code Redemption
BitTopup supports straightforward balance reloads. Depending on the product variant you select, you can process an automated direct top-up or redeem a digital scratch card PIN.
Method 1: Direct Mobile Balance Top-Up
- Select the desired Viettel credit denomination on BitTopup.
- Enter the recipient Viettel phone number in the required field.
- Double-check the 10-digit number to ensure accurate routing.
- Proceed to the checkout page, choose your preferred payment method, and complete the transaction.
- The credit applies directly to the target mobile number over the carrier network.
Method 2: Digital Scratch Card (PIN Code) Redemption
If you purchase a digital Viettel prepaid card code, you receive an electronic voucher code. To redeem it onto your phone:
- Open the phone dialer on the device containing the Viettel SIM card.
- Dial the USSD command syntax:
*100*PIN_CODE#(replacePIN_CODEwith the digital code received on your order confirmation). - Press Call.
- You will receive an on-screen notification and an SMS from Viettel confirming the successful balance addition.
| Top-Up Method | How It Works | Best For |
|---|---|---|
| Direct Top-Up | Carrier pushes credit straight to phone number | Expats, family sending credit abroad, quick reloads |
| Digital PIN Code | User receives a voucher code to dial *100*CODE# | Gifting codes, stocking up on prepaid cards, offline use |
Viettel VN Denominations, Exchange Rates, and Available Credit Amounts
Viettel prepaid mobile accounts use Vietnamese Dong (VND). Common denominations available for recharge include:
- 10,000 VND
- 20,000 VND
- 50,000 VND
- 100,000 VND
- 200,000 VND
- 500,000 VND
BitTopup lists current product denominations along with clear, dynamic exchange pricing on the live checkout interface. Because foreign exchange rates vary, review the real-time pricing directly on the store page before placing your order.
How to Check Your Viettel Account Balance and Validity (*101# Syntax)
After completing a recharge on BitTopup, verify that the funds have reached your balance. Viettel provides dedicated USSD commands that work free of charge, even if your balance is zero.
| USSD / SMS Command | Purpose | Action Required |
|---|---|---|
*101# + Call | Check Main Account Balance (Tài khoản chính) & Expiration Date | Dial from phone keypad |
*102# + Call | Check Promotional Balance (Tài khoản khuyến mãi) & Data Balances | Dial from phone keypad |
*098# + Call | Check Viettel Personalized Offers, Packages & Value-Added Services | Dial from phone keypad |
Send KTTK to 191 | Check Remaining 4G/5G High-Speed Data Volume | Free SMS to carrier service |
Main Balance vs. Promotional Balance
- Main Account (Tài khoản chính): Holds standard paid balance. Used to pay for all voice calls, SMS, mobile data usage, and subscription to 4G/5G data packages.
- Promotional Account (Tài khoản khuyến mãi): Holds bonus balance granted during carrier promotion days (e.g., 20% bonus recharge events). Can only be used for on-net/off-net calls and SMS, not for subscribing to monthly data packages.
Converting Viettel Mobile Balance to 4G/5G Data Packages in 2026
Once your Viettel mobile balance has been reloaded, you can register for high-speed 4G or 5G data packages directly from your phone. Send the registration SMS syntax to the official Viettel shortcode 191.
Popular Data Packages in 2026
- Daily Packages (e.g., ST5K, ST10K, ST15K): * Send package code (e.g.,
ST15K) via SMS to191. * Offers daily allowances of 1 GB to 3 GB for short-term internet browsing. - Monthly Packages (e.g., SD90, SD120, SD135, 5G150): * Send package code (e.g.,
SD120) via SMS to191. * Deducts the monthly fee directly from your main balance and provides daily high-speed data allotments plus carrier perks. - Cancel Auto-Renewal: * Send
HUY [PackageName]to191to stop recurring billing before your balance is automatically charged at the next billing cycle.
Ensure your main balance (*101#) has sufficient credit equal to or greater than the package price before sending the activation text.
Region Restrictions: Vietnam Account Requirements and SIM Roaming Details
Viettel top-up products on BitTopup apply exclusively to prepaid SIM cards registered on the Viettel Vietnam telecommunications network. Keep the following requirements in mind:
- Active SIM Status: The SIM card must not be permanently blocked or terminated by the carrier due to long-term inactivity.
- Vietnam Carrier Lock: Top-up credits sold on this page cannot be used for Viettel subsidiaries in other countries (such as Unitel in Laos, Metfone in Cambodia, or Telemor in Timor-Leste).
- International Roaming: If you are outside Vietnam, you can still receive direct top-ups or redeem PIN codes, provided your Viettel SIM has international roaming (CVQT) activated before departing Vietnam, or your phone can connect to a roaming partner network to receive incoming USSD confirmations and carrier SMS.
Why Choose BitTopup for Viettel Mobile Credit Reloads
- No Login or Password Required: You never need to hand over your My Viettel account password or sensitive login credentials. Only the recipient phone number is needed.
- Zero Account Sharing: Transactions process directly through telecom top-up gateways, keeping your personal SIM profile and personal data completely private.
- Live Checkout Pricing: Clear display of amounts and applicable local currency conversion rates at checkout without hidden processing fees.
- Dedicated 24/7 Customer Support: If you experience any carrier delivery delays or order issues, BitTopup customer support is available around the clock to investigate and resolve your request.
Frequently Asked Questions
How do I top up a Viettel Vietnam phone number online?
Select your required credit denomination on BitTopup, input the 10-digit Viettel mobile phone number (or international format +84), and proceed to payment. Once the checkout process completes, the mobile credit is credited to the recipient phone number.
How can I check my Viettel mobile balance after completing a recharge?
Open your phone dialer, type *101#, and press Call. Your updated main balance and expiration date will appear on the screen immediately. To check promotional credits or active data package limits, dial *102# or send an SMS with the text KTTK to 191.
Can I recharge a Viettel VN number from overseas or abroad?
Yes. BitTopup enables users anywhere in the world to recharge a Viettel Vietnam mobile number. As long as the recipient number is an active Viettel prepaid SIM in Vietnam (or active on international roaming), the balance will update successfully regardless of your physical location.
How do I convert my Viettel prepaid mobile balance into 4G or 5G data packages?
After your top-up credit reflects in your main account (*101#), select a Viettel internet package (such as SD90, SD120, or daily plans like ST15K) and send an SMS with the package name to 191. The fee is deducted from your main balance, and high-speed mobile data activates instantly.
What should I do if my Viettel top-up credit does not appear immediately?
First, dial *101# to confirm whether your balance updated without an incoming notification SMS. During peak carrier network hours, processing may take several minutes. If the credit does not appear after 15 minutes, check your BitTopup order history to confirm the recipient phone number was entered correctly, then contact BitTopup 24/7 customer support with your order ID.
Are Viettel prepaid card PINs and top-ups refundable once delivered?
Because telecom credits and digital PIN codes are delivered instantly and processed directly through telecommunications gateways, completed reloads and dispatched card codes cannot be canceled, reversed, or refunded once fulfilled. Ensure you double-check the recipient phone number before submitting your payment.
