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How to choose a Vietnam SIM or eSIM: prices and where to buy
If you use a lot of data and need service for 30 days in Vietnam, compare Viettel’s 5 GB/day eSIM (150,000 VND) with MobiFone FR30 (150 GB, 250,000 VND). If you want to keep using your home number with minimal setup, your home carrier’s roaming is another option. A valid passport is required to register for a local line.
At a glance
- For 5 GB per day over 30 days, Viettel 5G150T eSIM costs 150,000 VND.
- MobiFone FR30 includes 150 GB and 200 minutes of domestic calls for 30 days at 250,000 VND.
- Home carrier roaming plans include KT’s daily option from 11,000 KRW and SK Telecom baro 3 GB for 29,000 KRW.
- To register for a local Vietnam line, present a valid passport and register your subscriber information.
How much do Vietnam SIMs, eSIMs, and home carrier roaming cost?
The local plans and home carrier roaming options shown here differ in data allowance and validity, so compare them based on your trip length and data needs.
| Option | Price and duration | Data and calls |
|---|---|---|
| Viettel SD120 | 120,000 VND · 30-day cycle | 2 GB per day, 60 GB total |
| Viettel SD135 | 135,000 VND · 30-day cycle | 5 GB per day, 150 GB total |
| Viettel 5G150T tourist eSIM | 150,000 VND · 30 days | 5 GB per day |
| MobiFone FR10 | 150,000 VND · 10 days | 50 GB of data, 70 minutes of domestic calls |
| MobiFone FR30 | 250,000 VND · 30 days | 150 GB of data, 200 minutes of domestic calls |
| KT Daily Roaming Basic | 11,000 KRW per day | 500 MB, then speeds up to 400 Kbps |
| KT Daily Roaming Plus | 13,000 KRW per day | 1 GB, then speeds up to 1 Mbps |
| SK Telecom baro 3 GB | 29,000 KRW · up to 30 days | 3 GB, free baro calls and texts |
| SK Telecom baro 8 GB | 39,000 KRW · up to 30 days | 8 GB, free baro calls and texts |
Which SIM or eSIM is right for my trip?
Local Vietnam carriers include Viettel, VinaPhone, and MobiFone. Choose based on whether you mainly need data, need local calls, or want to keep using your home number.
- If you use a lot of data and need service for 30 days, compare Viettel 5G150T and MobiFone FR30.
- For a 10-day trip when you need local calls, consider MobiFone FR10.
- If you want to keep using your home number with minimal setup, compare your home carrier’s roaming plans.
- The information provided here isn’t enough to compare VinaPhone plan prices and data allowances, so check its current plans before buying.
How do I buy a local Vietnam SIM or eSIM?
To sign up for a local mobile line, you must register your subscriber information with a valid passport. Viettel tourist SIMs and eSIMs are available at airport counters, official stores, and authorized retailers.
- 1. Have your passport ready
Have a valid passport ready. You’ll need it to register your subscriber information.
- 2. Choose where to buy
Viettel tourist plans are available at airport counters, official Viettel stores, and authorized retailers.
- 3. Complete eKYC registration
Viettel provides a five-step eKYC process for registering tourist SIMs and eSIMs.
- 4. If buying at the airport, check your arrival terminal
Viettel sales locations are in the international arrivals areas of Terminal 2 at Hanoi Noi Bai International Airport and the international terminal at Ho Chi Minh City Tan Son Nhat International Airport. Seven SIM counters are listed in the baggage claim area of Terminal 2 at Da Nang International Airport.
When does a MobiFone travel eSIM activate?
MobiFone offers free travel eSIMs to international tourists arriving in Vietnam. Each valid passport is eligible for one eSIM within 30 days of the most recent issue date.
- The 24-hour validity period starts after you make the activation call to 900, not when you receive the QR code.
- If you don’t plan to use it right away, consider when to activate it.
How do I check my remaining data?
According to Viettel, you can check your remaining data by texting KTTK to 191.
What to do in these situations
- If you need about 5 GB of data per day and are staying for 30 days
Compare the validity, data allowance, and price of Viettel 5G150T eSIM and MobiFone FR30.
- If you need data and local calls for 10 days
Consider MobiFone FR10, which includes 50 GB of data and 70 minutes of domestic calls.
- If you want to keep using your home number
Before you leave, check whether KT or SK Telecom supports Vietnam and whether your line is eligible for the plan.
- If you’ve received a MobiFone eSIM but don’t want to use it right away
Keep in mind that its 24-hour validity starts after you call 900 to activate it, not when you receive the QR code.
- If you want to check how much Viettel data you’ve used
Text KTTK to 191 to check your remaining data.
Pre-departure checklist
- Decide how many days you’ll travel and how much data you’ll need, then compare plan durations and allowances.
- Have a valid passport ready to register for a local SIM or eSIM.
- If you choose an eSIM, check that your device supports it before buying.
- If you choose home carrier roaming, check your line’s eligibility and the latest benefits before departure.
- For a MobiFone travel eSIM, plan when you’ll make the activation call after receiving the QR code.
FAQ
Should I choose a Vietnam SIM or eSIM?
If you want a local data plan, compare SIM and eSIM options. If you want to keep using your home number, consider home carrier roaming. Choose based on your trip length and data allowance.
Do I need a passport to buy a local Vietnam SIM or eSIM?
Yes. Foreign visitors must present a valid passport to register their mobile subscriber information.
Is the MobiFone travel eSIM free?
MobiFone offers free eSIMs to international tourists arriving in Vietnam. To use data, compare the FR10 and FR30 top-up packages.
When does the MobiFone eSIM validity period start?
The 24-hour validity period starts after you make the activation call to 900, not when you receive the QR code.
How do I check my remaining Viettel data?
Text KTTK to 191 to check.
Can I buy a Vietnam SIM at the airport?
Viettel lists sales locations in the international arrivals areas at Hanoi Noi Bai and Ho Chi Minh City Tan Son Nhat airports. There are seven SIM card counters in the baggage claim area of Terminal 2 at Da Nang International Airport.
Official sources & check dates
- Viettel eSIM for Vietnam: Daily 5GB for 30 days · 2026-10-28
- MobiFone - International Travel eSIM · 2026-10-28
- KT 슬기로운 로밍 생활 · 2026-10-28
- 로밍 요금제 < T로밍 < 상품 < T world · 2026-10-28
- Decree 163/2024/ND-CP detail Law on Telecommunications · 2026-10-28
- Viettel: Kho SIM số đẹp · 2026-10-28
- Where to Buy a SIM Card in Vietnam · 2026-10-28
- 로밍 상품 이용 안내 < 로밍 상품 < T world · 2026-10-28
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Site updated: 2026-10-28