Where it works
Vietnam
A physical roaming SIM connecting to Viettel in Vietnam. This is not the same product as the Viettel eSIM. Daily and Total plans support hotspot.
Make your data work for your trip
Daily GB · Data per day
Illustrative example
Example: Daily 1GB for 5 days gives you 1GB of high-speed data each day. Tomorrow brings a new 1GB allowance. You cannot use all 5GB on day one. Reset time and speed after the daily allowance depend on your plan.
Total GB · Data for the whole trip
Illustrative example
Example: Total 5GB for 5 days gives you 5GB for all 5 days combined, not 5GB each day. Use 2GB today and 3GB remains for the rest of the plan. It does not reset tomorrow. Treat the plan as offline once the high-speed data is used.
Delivery & setup
Free physical SIM delivery throughout Malaysia and Thailand. Order early: public holidays, weather and courier delays can affect arrival.
Please activate & use within 180 days of purchase (physical SIM). Once activated, the plan lasts for the number of days you selected.
Follow the selected plan's setup instructions above. Roaming services require Data Roaming ON; local-plan exceptions are shown with your selection.
Actual signal and speed vary by location, device and network conditions.
Full product specifications
🇻🇳 Vietnam Travel SIM Card
Best network coverage in Vietnam — ready to use the moment you land.
🌐 Runs on Viettel, Vietnam's largest mobile network — the widest coverage in the country, from Hanoi and Ho Chi Minh City to Sapa, Ha Long, Hoi An and the Mekong Delta. 5G/4G.
📊 Plan Types
🚀 Daily — a fresh batch of high-speed data every day, renewing whether or not you used yesterday's. After the daily allowance, speed drops to 128kbps until the next day's reset.
📦 Total GB — one fixed data pool, use anytime at your own pace, no daily cap. Runs out → top up.
💡 How much data? 1GB/day = maps, chat, email. 2–3GB/day = video calls, photos. Big Total GB = streaming, heavy use.
🔋 Check remaining data anytime on the Happy Travel SIM website — Total GB plans can be topped up there too.
📩 How to get it: your SIM ships ready to use — insert it and turn on Data Roaming on arrival.
⚠️ Please note
• Data only — no phone number, no calls or SMS.
• 📡 This is a roaming SIM — turn ON Data Roaming when you arrive, otherwise you'll have signal but no data. Still no data? Contact us and we'll help with the settings.
• 📶 Hotspot / tethering works on all plans.
• Please start using within 180 days of purchase. After activation, valid for your plan's day count.
💬 24/7 customer support — English · 中文 · Bahasa Melayu.


