Best Viettel eSIM for your trip length: 7 vs 15 vs 30 days
If you're planning a trip to Vietnam, Viettel offers three eSIM plans: 7 days for $10, 15 days for $11, and 30 days for $15, each with 5GB of high-speed data per day. Choosing the right plan based on your trip length can save you money and ensure you have reliable connectivity throughout your stay. Let's break down which plan fits your travel duration best.
Which Viettel plan fits your trip?
Viettel provides three eSIM plans tailored to common trip lengths: a 7-day plan at $10, a 15-day plan at $11, and a 30-day plan at $15. All include 5GB of high-speed data per day, with no throttling until you exceed the daily cap. After that, speed is reduced but data remains available.
Choosing the right plan saves money. For example, the 15-day plan is only $1 more than the 7-day plan but lasts twice as long. Conversely, the 30-day plan costs $15, while buying two 15-day plans would total $22 — so you save $7 by going with the 30-day option. All plans use Viettel's native network, which per carrier claims covers approximately 99% of Vietnam's populated areas. Installation is simple: you receive a QR code via email and activate it on your eSIM-compatible phone (iPhone XS and newer, Galaxy S20 and newer, Pixel 3 and newer; note that iPhones from mainland China, Hong Kong, and Macau are not supported).
Keep your home SIM active if you need to receive bank SMS or calls, as the eSIM handles data only. Now let's look at each plan in detail.
7-day: Best for short visits (≤7 days)
The Viettel 7-day 5GB/day plan costs $10 total, making it ideal for trips of 7 days or less — such as a weekend getaway combined with a short work trip or a quick holiday. At roughly $1.43 per day, it's the cheapest daily rate among the three Viettel options.
If your trip is exactly 7 days, this plan is a perfect fit. However, if you're staying 8–9 days, consider the 15-day plan at $11, which gives you more than double the duration for just $1 extra. With 5GB per day, you have enough data for maps, messaging, social media, and video calls. For heavier usage, you might consider a plan with more daily data, but for most travelers this is sufficient.
15-day: Best for medium trips (8–15 days)
The Viettel 15-day 5GB/day plan costs $11 total, making it the best value for trips lasting 8 to 15 days — the typical two-week vacation. It's only $1 more than the 7-day plan but gives you 8 additional days of data.
For a 10-day trip, the 15-day plan costs less per day than buying the 7-day plan and then topping up. It comfortably covers a common itinerary like Hanoi to Halong Bay, Da Nang, Hoi An, and Ho Chi Minh City, with stable data connectivity wherever Viettel's network reaches.
30-day: Best for long stays (16+ days)
The Viettel 30-day 5GB/day plan costs $15 total, which breaks down to just $0.50 per day — the lowest per-day cost among the three. This plan is ideal for trips longer than 15 days, digital nomads, or travelers exploring multiple cities over a month.
If you anticipate extending your stay, starting with the 30-day plan from day 1 saves you money. Buying two 15-day plans would cost $22, so the 30-day plan saves you $7. Note that data resets daily at midnight Vietnam time, and unused daily data does not roll over. For most light work and travel needs, 5GB per day is sufficient.
Verbal summary: price per day comparison
Looking at cost per gigabyte: the 7-day plan gives you 35GB total for $10 (~$0.29/GB); the 15-day plan provides 75GB for $11 (~$0.15/GB); and the 30-day plan delivers 150GB for $15 ($0.10/GB). All three use Viettel's 4G/5G network without speed caps before the daily limit.
If you're undecided, the 15-day plan is the sweet spot for most tourists. Only choose the 30-day plan if you're staying longer than 15 days. For comparison, Vinaphone offers similar plans: 10 days for $12, 15 days for $13, and 30 days for $16 — slightly higher prices for comparable data, with similar coverage in cities. Ultimately, your choice should align with your trip duration.
FAQ
Which Viettel plan should I choose for a 10-day trip?
For a 10-day trip, the 15-day plan is the best choice. It costs only $1 more than the 7-day plan but covers your entire stay without needing to top up. The per-day cost is lower than buying the 7-day plan and adding extra days.
Can I extend my Viettel eSIM if my plans change?
Yes, you can purchase a new eSIM plan if you need more days. Since the plans are prepaid and not automatically renewable, simply buy an additional plan from simvietnam.telebox.vn and install the new eSIM. Your phone can store multiple eSIMs, so you can switch as needed.
Does Viettel eSIM work in remote areas like Sapa or Ha Giang?
Viettel's network covers the vast majority of populated areas, including Sapa and Ha Giang, though coverage in very remote mountainous regions may be less reliable. Per carrier claims, Viettel reaches about 99% of populated areas, so you can generally expect good connectivity in tourist destinations.
Can I use a Viettel eSIM and my home SIM at the same time?
Yes, most modern smartphones support dual SIM functionality. You can keep your home SIM active for calls and SMS (e.g., bank verification codes) while using the Viettel eSIM for mobile data. Just ensure your phone is unlocked and eSIM-compatible.
Is there a difference in speed between the 7-day and 30-day plan?
No, all three Viettel eSIM plans offer the same network experience: 5GB of high-speed data per day on Viettel's 4G/5G network. After reaching the daily limit, speeds are reduced regardless of the plan duration. There is no speed differentiation between plans.