Vietnam eSIM vs Airalo vs Holafly: Cheapest 30-Day Plan

Local eSIMs like Viettel and Vinaphone are direct carrier plans, whereas Airalo and Holafly are resellers that lease network access from the same local operators. This distinction matters for pricing and data structure.

Our 30-day Viettel plan (5GB/day) costs $15, and the Vinaphone 30-day plan (5GB/day) costs $16. Airalo and Holafly typically charge higher per-GB rates for comparable data volumes on their 30-day plans.

Reseller plans often come with total data caps — for instance, 5GB or 10GB for the entire month. Local plans, by contrast, provide daily high-speed allowances that sum to far greater totals: 150GB with Viettel or Vinaphone. This difference alone can make local eSIMs the more economical choice for anyone who uses data beyond light browsing.

The Viettel 30-day eSIM at 5GB/day costs $15 total, giving you 150GB of high-speed data. The Vinaphone equivalent is $16 for the same daily allowance and total. That works out to roughly $0.10 per gigabyte.

Airalo’s 30-day plans for Vietnam range from about $16 to $24, but they offer only 5GB to 10GB total data — no daily refresh. Holafly’s 30-day “unlimited” plan is priced between $34 and $41, depending on your region of purchase.

Breaking it down per GB: local eSIMs cost roughly $0.10/GB, Airalo comes in at $1.60–$4.80/GB, and Holafly, while unlimited, is significantly pricier for heavy users. If you plan to use maps, social media, and streaming regularly, a local plan saves a lot of money.

Local eSIMs give you 5GB of high-speed data each day. Unused data does not roll over to the next day, but the total allowance over 30 days is 150GB — ample for navigation, video calls, and even some streaming.

Airalo imposes a total data cap: for example, 5GB or 10GB for the full 30-day period. Once you hit that cap, speeds are throttled to 128 kbps (just enough for text messaging) unless you purchase a top-up.

Holafly advertises unlimited data but applies a fair-use policy. Some users report throttling after 1–2GB per day or around 30GB total per month, though exact thresholds are not publicly confirmed by Holafly. This makes it unpredictable for heavy usage.

For tasks like streaming video, uploading photos, or remote work that requires a stable connection, the local eSIM’s generous high-speed quota is far more reliable than either reseller’s capped or throttled offering.

All three options deliver your eSIM via a QR code, which you can scan before departure or after arriving in Vietnam. No physical SIM card is needed.

You need an eSIM-compatible phone: iPhone XS or newer (excluding mainland China models), Samsung Galaxy S20 or later, Google Pixel 3 and above, and most modern devices from other brands. Check your phone’s IMEI to confirm eSIM support.

Local eSIMs: the QR code is sent immediately after purchase. You can activate it by scanning at any time — no need for airport Wi-Fi. Airalo and Holafly follow a similar process, but activation sometimes requires an email confirmation or Wi-Fi connection if done outside Vietnam.

All three work well with dual-SIM setups. Keep your home physical SIM active for calls and SMS while using the eSIM for mobile data. There’s no conflict between the two.

Viettel claims approximately 99% population coverage, and Vinaphone reports about 95% — both based on official carrier statements. Coverage is strong in cities, along highways, and in most rural areas.

Mobifone (also sold as Skyfi) is available but has a slightly smaller footprint than Viettel or Vinaphone. For remote destinations, Viettel is generally the most reliable.

Resellers like Airalo and Holafly use the same physical towers as local carriers, so coverage area is similar. However, during network congestion, reseller traffic may be deprioritized (lower QoS priority), though we cannot confirm actual throttling as we have not conducted independent tests.

For travelers heading to Sapa, Ha Giang, or other remote trekking areas, a local eSIM on Viettel is recommended for the best reception based on carrier coverage maps.

Choose a local eSIM (Viettel or Vinaphone) if you want the cheapest cost per GB, a high daily data allowance, and direct carrier reliability. It’s ideal for heavy data users who rely on maps, social media, and streaming throughout a month-long trip.

Choose Airalo if you need a regional plan covering multiple Southeast Asian countries or if you prefer a brand you’ve used before. Just be mindful of the limited total data and higher per-GB cost.

Choose Holafly if “unlimited” data appeals to you and you don’t mind paying a premium, accepting that fair-use throttling may kick in during heavy usage.

Our recommendation for most travelers on a 30-day trip: go with the Viettel or Vinaphone 30-day eSIM. The combination of daily high-speed data, low price, and strong network coverage makes it the best value proposition.