Best eSIM for 🇻🇳 Vietnam

Viettel is your best bet for an eSIM in Vietnam. It’s hands-down the most reliable network across the country, even in more remote spots. Mobifone is a decent second choice, but stick with Viettel if you can find their eSIM.

A 7-day plan with around 5 GB will run you about $5-$10. For 15 days and 10 GB, expect to pay $10-$20. These prices are estimates; actual costs can vary.

Getting your eSIM active can be a bit fiddly. Make sure you don't turn on airplane mode before activating the eSIM. If you have a dual-SIM phone, especially one from China, it might not support eSIM properly. Also, scan the QR code immediately after receiving it; some expire quickly.

Viettel is the Network You Want

Viettel’s network coverage in Vietnam is significantly better than its competitors. While you'll likely get signal in major cities like Hanoi, Ho Chi Minh City, and Da Nang with most providers, Viettel extends further into rural areas and mountainous regions. You might lose signal on some remote islands or in very deep mountain pockets with any provider, but Viettel minimizes these gaps. Mobifone is the next best, but it doesn't quite match Viettel's reach.

Price and Data Needs

For a typical 7 to 15-day trip, you won't need a massive data package. A plan offering 5GB to 10GB should be more than enough for navigation, messaging, and occasional browsing. Expect to pay between $5 and $20 for these plans, depending on the duration and exact data allowance. Buying directly from Viettel’s website or app upon arrival might offer slightly better rates than third-party eSIM providers, but it adds a step when you land.

Activation Gotchas

The biggest activation headache is often timing. Ensure you're connected to Wi-Fi before you begin the eSIM installation process. Some phones require you to restart after activation. If you’re using a dual-SIM phone, double-check compatibility, as some older or region-specific models (especially those from China) lack eSIM support. The QR code you receive for setup usually has a limited window for scanning; don't let it sit around too long.

The Vietnam-Specific Gotcha: Registration

Vietnam requires SIM card registration, and this technically applies to eSIMs too, though enforcement for tourists is often lax with major providers like Viettel. You might be asked for your passport details during purchase or activation. Keep a digital copy of your passport handy. This is less of an issue with pre-purchased eSIMs from international vendors, but good to be aware of if you buy locally.

Quick Questions Answered

Will my phone work with a Vietnamese eSIM? Most modern smartphones support eSIM, but always check your device’s specifications. Some older or region-locked phones, particularly those from China, may not be compatible.

Can I use my eSIM as a hotspot? Yes, you can typically use your Vietnamese eSIM data for tethering or as a mobile hotspot. Check the specific plan details from your chosen provider to confirm any restrictions.

Is it better to buy an eSIM before I go or when I land? Buying before you go guarantees you have service the moment you land, avoiding a frantic search for Wi-Fi at the airport. Buying in Vietnam might offer slightly cheaper rates but requires an extra step upon arrival.

How much data do I actually need? For a 1-2 week trip, 5GB to 10GB is usually sufficient for basic browsing, maps, and messaging. If you plan on streaming a lot of video or video calling, consider a larger package.