【Vietnam eSIM】Viettel Internet Access ｜Phu Quoc, Hanoi, Da Nang, Hoi An, Ho Chi Minh City ｜ 2026 Top Recommended eSIM

• The eSIM will be sent to your email within 10 minutes after payment.

• Please install and activate the eSIM within 15 days of receipt, or it will expire.

• The eSIM starts counting from the day of installation.

  • Make sure to activate it on the day you plan to use it (Vietnam Time).

  • Activation can be done before departure, but the day of use should match Vietnam time for proper day counting.

Vietnam eSIM Features and Coverage

• Viettel – Vietnam’s #1 telecom provider, state-owned and operating the widest network in the country

• Ranked Southeast Asia’s most valuable telecom brand for 9 consecutive years by Brand Finance, with a brand value of $8.9 billion

• Excellent network coverage across Vietnam, including islands like Phu Quoc

• Flexible daily 5GB data plans – choose the number of days you need

• Viettel market share exceeds 54%, ensuring the widest coverage for travel

• No routing through Chinese nodes — traffic runs on the local carrier's native network, so ChatGPT, Gemini and other AI services work normally

Vietnam eSIM — Vietnam eSIM Product Details

• Validity / Day Calculation:

  • The eSIM is automatically activated upon scanning. Install within 15 days of purchase, according to Vietnam Time.

  • First day: From the moment of activation until 23:59 Vietnam Time.

  • Second day: Begins at 00:00 Vietnam Time.

  • Example: If you arrive in Vietnam on Jan 20, scan the QR code after 00:00 Vietnam Time on Jan 20 (can be done before departure). Jan 20 counts as Day 1, and Jan 21 counts as Day 2.

• Contents: Internet data only

• Daily Data: 5GB per day, resets at 00:00 Vietnam Time

• Coverage: Entire Vietnam, including Phu Quoc Island

• Data Limit: After daily 5GB, speed reduces to 128kbps

• Hotspot Sharing: Allowed (compatibility may vary; 1 eSIM per device recommended)

• Local Carrier: Viettel

Vietnam eSIM Installation and Important Reminders

• Install the eSIM on the day of use, when the phone is connected to the internet (recommended to install at home before leaving)

• Not compatible with iPads, tablets, customized phones, contract phones, carrier-locked devices, jailbroken or rooted phones

• Cannot install without an active internet connection

• Install within 15 days of purchase, or the eSIM will expire; activation starts the countdown

• Follow the installation instructions included in your eSIM email

Vietnam eSIM Customer Support

• For support, contact Line@ Official Account: @peanutmo (10:00-17:00, UTC+8 Time Zone). WhatsApp: +886-921-963-203

How to Check If Your Phone Supports eSIM

1. Dial *#06#
   If an EID appears, your phone supports eSIM
   (Please also confirm your device is not carrier-locked)
2. Refer to the compatibility list below
   (For reference only; we recommend confirming with your device manufacturer)

Vietnam eSIM Installation Guide: From Compatibility Check to Landing

The full walkthrough is below. Following it end to end — scanning the QR code through to switching your data line after you land in Vietnam — takes about ten minutes. If a step is unclear, the full installation guide covers it in more detail.

Vietnam eSIM: Frequently Asked Questions

How are days counted on the Vietnam eSIM? Is it different?

Yes, it differs from our other plans. Installing activates day one automatically, rather than counting to 23:59 on the day you scan. Install on the day you actually start using it, in Vietnam time.

How far ahead can I buy it?

It must be installed within 15 days of purchase or it expires — shorter than the 30 days on our other plans. Please do not buy far in advance.

Does it work on Phu Quoc?

Yes. Viettel is Vietnam’s largest carrier and Phu Quoc is covered, along with Hanoi, Da Nang, Hoi An and Ho Chi Minh City.

How much data do I need for a week in Vietnam?

We would not recommend the smallest plan — leaving headroom is the safer choice. Maps, navigation, translation, social media and messaging add up to more than most people expect, and running out of data abroad is the worst moment to find that out. For most travellers around 3GB a day is a more comfortable starting point. Where this destination offers a total-data plan (10GB or 20GB, for example), that is usually our first recommendation: a heavy day will not leave you stuck, and the allowance spreads across the whole trip. If you stream video, upload a lot of photos, or need to share the connection with another device, an unlimited plan is the simplest answer.

When should I install the eSIM?

Install on your departure day while your phone still has internet — airport Wi-Fi works, or your home network before you fly. An eSIM cannot be activated without a connection.

How long is the QR code valid?

The eSIM must be activated within 30 days of delivery or it expires, and that is the buyer’s responsibility. Ordering about a week before departure is ideal rather than months ahead.

Which devices are not supported?

iPads, tablets, customised devices, contract phones, carrier-locked phones, and jailbroken or rooted devices are not supported. Before ordering, dial *#06# — if an EID appears your handset supports eSIM. Also confirm the phone is not locked to a carrier.

How soon will I receive it after paying?

The QR code is sent automatically to your contact email within about 10 minutes of payment. If it does not arrive, check your spam folder or contact our LINE official account @peanutmo / WhatsApp +886-921-963-203 (10:00-17:00, UTC+8 Time Zone).

Further Reading

Other destinations: Thailand eSIMSingapore eSIMAll Southeast Asia plans