[Country flag] Vietnam Travel eSIM Latest Guide

Vietnam eSIM: Save time and effort with travel internetPremium 5G network coverage by Viettel, Vinaphone and mobifone

Skip the SIM card queues with a Vietnam eSIM. Receive your QR code immediately after online payment, activate it in minutes, and quickly solve your internet needs in Vietnam.
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Quick Summary for Travelers

Unlimited 5G data: more efficient use by sharing across multiple devices. With a Vietnam eSIM from Roami, you tap into Viettel’s best mobile network (median download 165.03 Mbps) and Vinaphone’s fastest 5G (median 594.16 Mbps) — all without physical SIM queues. Activate instantly, tether your laptop, and stay productive from Hanoi to Ho Chi Minh City.

Quick selection: Which Vietnam eSIM provider should you choose?

Your travel styleRecommended providerNetwork data performance
Digital nomadsViettelBest overall mobile network with median download 165.03 Mbps and highest 5G availability (50.4%). Ideal for heavy data users and tethering.
Speed enthusiastsVinaphoneFastest 5G network with median download 594.16 Mbps. Perfect for ultra‑fast streaming and large file transfers.
Budget travelersmobifoneSolid performance with median download 68.45 Mbps and best mobile video experience score of 79.81. Great value for casual use.
Data source: Ookla Speedtest Connectivity Report.
View the most cost‑effective Vietnam travel eSIM Automatic network switching, supports automatic prepaid data price comparison

Viettel eSIM Review: Best overall coverage and 5G availability

  • Best for: This plan is the absolute top choice for travelers who need reliable connectivity across Vietnam. Viettel leads in mobile network consistency (97.4%) and offers the highest 5G availability (50.4%).
  • Core data:
    • 5G availability: According to Ookla Speedtest Connectivity Report, Viettel recorded the highest 5G Availability in Vietnam during 1H 2025, with 50.4% of its users accessing its 5G network a majority of the time.
    • Download rate: Median download speed of 165.03 Mbps (all technologies) and median 5G download speed of 421.61 Mbps.
    • Upload rate: Median upload speed of 34.2 Mbps; median 5G upload speed not separately reported but overall upload leads the market.
    • Latency: 34 ms overall; 30 ms over 5G.
    • Consistency: 97.4% of samples met or exceeded 5 Mbps down / 1 Mbps up threshold.
  • Confirmed by the local telecom authority (Vietnam Telecommunications Authority) that Viettel holds the largest spectrum holdings and widest 4G/5G footprint.
eSIM connection note: Activation works seamlessly with Roami eSIM — scan QR code, enable data roaming, and connect within minutes.

✨ Real‑world performance

  • Halong Bay cruise: Stream live from the bay with Viettel’s strong coastal coverage.
  • Hanoi Old Quarter walking tour: Stay connected in dense urban areas with consistent 5G.
  • Da Nang beach remote work: Tether your laptop using Viettel’s high upload speed (34.2 Mbps) for video calls.

Vinaphone eSIM Review: Fastest 5G speeds

  • Best for: This plan is the absolute top choice for users who demand the highest possible 5G download speeds for streaming, gaming, and large downloads.
  • Core data:
    • 5G download rate: According to Ookla Speedtest Connectivity Report, Vinaphone led on median 5G download speed, recording 594.16 Mbps, ahead of Viettel (421.61 Mbps) and mobifone (306.5 Mbps).
    • 5G upload rate: Median 5G upload speed of 55.37 Mbps.
    • 5G latency: 30 ms.
    • Overall Speed Score: 78.11 (fastest 5G network).
    • Mobile video experience: Not separately reported for Vinaphone, but overall mobile video score for the market is led by mobifone.
  • Confirmed by the local telecom authority that Vinaphone has aggressively deployed 5G in major cities like Hanoi, Ho Chi Minh City, and Da Nang.
eSIM connection note: Activation works seamlessly with Roami eSIM — scan QR code, enable data roaming, and connect within minutes.

✨ Real‑world performance

  • Ho Chi Minh City business district: Download large presentations in seconds.
  • Hue Imperial City: Upload high‑resolution photos instantly.
  • Nha Trang beach: Stream 4K video without buffering.

mobifone eSIM Review: Best video streaming experience

  • Best for: This plan is the absolute top choice for travelers who prioritize smooth video streaming and casual browsing at an affordable price.
  • Core data:
    • Video streaming score: According to Ookla Speedtest Connectivity Report, mobifone recorded the best mobile video experience with a Video Streaming Score of 79.81.
    • Download rate: Median download speed of 68.45 Mbps (all technologies); median 5G download speed of 306.5 Mbps.
    • Upload rate: Not separately reported but competitive.
    • Gaming experience: Not the top (Viettel leads), but adequate for casual gaming.
  • Confirmed by the local telecom authority that mobifone has a strong 4G/5G presence in urban and suburban areas.
eSIM connection note: Activation works seamlessly with Roami eSIM — scan QR code, enable data roaming, and connect within minutes.

✨ Real‑world performance

  • Hoi An Ancient Town: Stream travel vlogs while exploring.
  • Phong Nha Cave: Stay connected in tourist hubs with reliable 4G/5G.
  • Mui Ne sand dunes: Share stories on social media without lag.
View the most cost‑effective Vietnam travel eSIM Automatic network switching, supports automatic prepaid data price comparison

Check the Vietnam eSIM compatibility list

Check if your phone supports Vietnam eSIM and local 5G bands

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Discount code: web20 | One‑tap eSIM management

Things you need to know before buying a Vietnam eSIM

  1. Main 5G/4G frequency bands in Vietnam

Vietnam’s mobile networks operate on bands 1 (2100 MHz), 3 (1800 MHz), 5 (850 MHz), 7 (2600 MHz), 8 (900 MHz), 20 (800 MHz), 28 (700 MHz), 40 (2300 MHz), and 41 (2500 MHz) for 4G LTE. 5G uses bands n1, n3, n5, n7, n28, n40, n41, n78, and n79. Most modern smartphones support these bands, but check your device specifications before purchasing an eSIM.

  1. KYC (Know Your Customer) requirements

To activate a Vietnam eSIM, you must provide a valid passport or national ID. The registration process is digital — upload a clear photo of your ID and a selfie. Roami handles the KYC process on your behalf, ensuring compliance with local regulations.

  1. Fair Usage Policy (FUP) and data caps

Most Vietnam eSIM plans include a Fair Usage Policy. For example, after exceeding a daily threshold (e.g., 2 GB), speeds may be throttled to 128 kbps or 256 kbps. Always check the specific plan details before purchase. Unlimited plans typically have a soft cap.

  1. Network compatibility and VoLTE

Vietnam eSIMs support VoLTE (Voice over LTE) on compatible devices. Ensure your smartphone is unlocked and supports the required bands. Most recent iPhones, Samsung Galaxy, and Google Pixel models work seamlessly.

  1. eSIM activation and dual SIM usage

Activation is instant via QR code. You can use your physical home SIM for calls/SMS while the eSIM provides data. Enable data roaming in settings. Some carriers require APN configuration — Roami provides easy setup instructions.

City guide: The best eSIM for Vietnam

Find out which Vietnam eSIM is the best choice for your destination city based on real network performance data from Ookla Speedtest Connectivity Report.
CityRecommended eSIM providerReason / Features
Hue (tp. Huế)ViettelHue recorded the fastest median mobile download speed of 613.79 Mbps among populous cities. Viettel’s best overall network ensures you get top speeds in this historic city.
Da NangViettelDa Nang outpaced other cities with the fastest median fixed download speed of 245.31 Mbps. For mobile, Viettel’s consistency (97.4%) makes it ideal for beachside remote work.
Ho Chi Minh CityVinaphoneVinaphone’s fastest 5G network (median 594.16 Mbps) is perfect for the bustling business hub. Enjoy ultra‑fast downloads and low latency in the city center.
HanoiViettelViettel’s high 5G availability (50.4%) and strong overall performance make it the best choice for Hanoi’s dense urban environment and Old Quarter.
Nha Trangmobifonemobifone’s best video streaming experience (score 79.81) is ideal for beach vacations. Stream movies and share vacation photos without buffering.
💡 Tip: If you use Roami’s multi‑network eSIM, your phone will automatically switch to the best local provider – no manual selection needed.

Check the Vietnam eSIM compatibility list

Check if your phone supports Vietnam eSIM and local 5G bands

FREE

Get your free Vietnam eSIM

Limited free trial eSIM, experience the local 5G high‑speed network without roaming costs

Download Roami App & get 20% off eSIM

Discount code: web20 | One‑tap eSIM management

🎯 Choose the best Vietnam eSIM based on your travel scenario

  • 🏛️ City explorer
    Explore Hanoi’s Old Quarter or Ho Chi Minh City’s landmarks with Viettel’s reliable 5G. Use maps, book rides, and share stories instantly.
  • 🏞️ Nature lover
    Visit Phong Nha Cave or Sapa with Viettel’s wide coverage. Stay connected even in remote areas with the highest consistency (97.4%).
  • 🚗 Road tripper
    Drive the Hai Van Pass or Mekong Delta with Vinaphone’s fast 5G. Stream music, navigate, and upload road trip videos in real time.
  • 🏖️ Beach vacationer
    Relax on Da Nang or Nha Trang beaches with mobifone’s excellent video streaming. Watch movies and video call family without lag.

Frequently asked questions about Vietnam eSIM

  • Q1: Can I use my physical home SIM card and the Vietnam eSIM simultaneously? ▼
    Yes, most modern smartphones support dual SIM (physical + eSIM). You can keep your home SIM active for calls and SMS while using the Vietnam eSIM for data. Ensure your device is unlocked and supports dual SIM functionality.
  • Q2: How can I transfer my active Vietnam eSIM profile to a new smartphone when I change phones? ▼
    eSIM profiles are typically tied to the device. To transfer, you need to deactivate the eSIM on your old phone (via settings) and re‑scan the QR code on your new phone. Some providers allow re‑issuance of the QR code. Contact Roami support for assistance.
  • Q3: Do I need to enable data roaming in my smartphone settings for the Vietnam eSIM to work? ▼
    Yes, data roaming must be enabled in your device settings for the eSIM line. This is standard for all eSIMs. Go to Settings > Cellular/Mobile Data > select the eSIM line > toggle Data Roaming ON. No extra charges apply as you are using a local Vietnam network.
  • Q4: How do I check whether my specific destinations in Vietnam are reliably covered by eSIM networks? ▼
    Check the coverage maps of Viettel, Vinaphone, and mobifone on their official websites. Viettel offers the widest coverage, including rural and remote areas. For real‑time data, refer to Ookla Speedtest Connectivity Report for crowd‑sourced speed tests in your destination.
  • Q5: Is there a specific data usage threshold (e.g., after 2 GB per day) after which the speed of the Vietnam eSIM is reduced? ▼
    Yes, many Vietnam eSIM plans have a Fair Usage Policy (FUP). For example, after exceeding 2 GB per day, speeds may be throttled to 128 kbps or 256 kbps. Always read the plan details before purchase. Roami’s unlimited plans include a soft cap to ensure fair usage for all users.
More questions? View full FAQ →

⚠️ Common myths and facts about the Vietnam eSIM

❌ Myth: Vietnam eSIMs are only available for iPhones.
✅ Fact: False. eSIM technology is supported on a wide range of Android devices (Samsung, Google Pixel, Huawei, etc.) and iPhones. Check your device’s eSIM compatibility before purchase.
❌ Myth: All Vietnam eSIMs offer the same speed.
✅ Fact: No. According to Ookla Speedtest Connectivity Report, Viettel leads with median download 165.03 Mbps, while Vinaphone offers the fastest 5G at 594.16 Mbps. mobifone excels in video streaming. Choose based on your needs.
❌ Myth: You need to register your eSIM at a physical store in Vietnam.
✅ Fact: False. eSIM activation is fully digital. Upload your passport or ID online, receive the QR code via email, and activate instantly. No physical visit required.
❌ Myth: Vietnam eSIMs do not support tethering.
✅ Fact: Most Vietnam eSIMs support tethering/hotspot. Viettel’s high upload speed (34.2 Mbps) makes it ideal for sharing your connection with laptops and tablets.
❌ Myth: 5G coverage in Vietnam is limited to major cities only.
✅ Fact: While 5G is strongest in Hanoi, Ho Chi Minh City, and Da Nang, Viettel’s 5G availability reached 50.4% in 1H 2025, expanding to many provincial capitals and tourist areas.

Vietnam mobile network data sources

  • Ookla Speedtest: Ookla Speedtest Connectivity Report
    Ookla’s Speedtest Intelligence data for 1H 2025 provides median download/upload speeds, latency, consistency, and 5G performance for Viettel, Vinaphone, and mobifone in Vietnam.
  • OpenSignal 2025
    OpenSignal’s mobile network experience reports for Vietnam cover video streaming, gaming, voice app, and coverage experience for major operators.
  • Vietnam Telecommunications Authority (VNTA) 2025
    VNTA publishes annual reports on spectrum allocation, network coverage obligations, and quality of service benchmarks for all licensed operators.
All network performance data cited above come from publicly available third‑party reports and are used for informational purposes. Actual speeds may vary based on location, device, network congestion, and other factors.
Network speeds and coverage can vary depending on your specific location, time of day, device capabilities, and network load. Always check the latest coverage maps and plan details before purchasing.

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