Install before you fly, connect the moment you land — 210+ destinations
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Vietnam 20GB 30 days

20GB for 30 days across Vietnam.

Vietnam 20GB 30 days
  • DataYes
  • CallsNo
  • SMSNo

Before you buy

The rules, limits and cautions for this plan. Read them before you buy: once it is installed or its validity has started, it cannot be refunded.

  • 4G at most; this plan has no 5G. A 5G phone works fine, it simply connects on 4G.
  • Data only: no phone number and no SMS. Keep your home SIM for OTP codes.
  • You can top up this same eSIM from “My eSIMs” without scanning a new QR code.
Plan details
Data
20GB
Validity
30 days
Coverage
Vietnam
Network
Viettel Mobile / Vinaphone / MobiFone
Traffic exits in (IP)
Singapore
Technology
3G / 4G
Activation
Starts on first connection at the destination
Install window
180 days after purchase
Hotspot
Yes
Calls / SMS
Data only
Local number
No
Top-up available
Yes
Sold by
eSIMonline
Countries and supported networks

Vietnam

  • Viettel Mobile
  • Vinaphone
  • MobiFone

Slow data? Lock one network

This plan can use several networks, and your phone switches between them on its own whenever the signal changes. Data drops for a moment on every switch, and sometimes the phone settles on a weak network or 3G. If data is slow, turn off automatic selection and lock the single strongest network.

iPhone

  1. Go to Settings › Cellular and tap your travel eSIM under SIMs
  2. Keep Turn On This Line and Data Roaming on, then tap Network Selection
  3. Turn off Automatic, wait 1–2 minutes for the list, then tap the strongest network. A tick means it is locked

Android

  1. Samsung: Settings › Connections › Mobile networks. Pixel and others: Settings › Network & internet › SIMs, then tap your travel eSIM
  2. Keep Data roaming on, then tap Network operators (on a Pixel the setting is on this same page)
  3. On a dual-SIM phone pick the eSIM tab first. Turn off Select automatically, wait for the search, then tap the strongest network

Which network to pick

  • Pick the most signal bars, 5G or LTE first, and avoid 3G
  • Only pick names from this plan's network list above. If it says it cannot connect or shows No Service, pick another
  • Still slow? Try another one, compare speeds and keep the faster
  • Lost signal after moving to a new city, or back home? Turn automatic back on
Locking one network on iPhone in three steps: Settings › Cellular and tap your travel eSIM, tap Network Selection, turn off Automatic and pick the strongest network
Locking one network on Android in three steps: open Mobile networks, tap Network operators, turn off Select automatically and pick the strongest network

How you use it

  1. Buy the plan and wait for the QR code by email, usually within a few minutes.
  2. Install the profile while on Wi-Fi at home, either by scanning the QR from another screen or entering the details manually.
  3. Turn roaming data off on your main line and set this eSIM as the data line.
  4. On arrival, switch Data Roaming on for this eSIM line — the plan works over roaming.

You can install the profile before you fly. Validity starts at the first successful connection at your destination.

See the full installation walkthrough

FAQ

Can I install it before I fly?+

Yes, and it is the better way to do it: installing needs internet, so install on Wi-Fi at home and switch the line on after landing. The validity starts at the first connection at the destination.

Can I share the connection over hotspot?+

Yes, hotspot is allowed on this plan. Whatever your friends use comes out of the same allowance.

What if I run out of data before I fly home?+

You can top the same profile up without installing another eSIM, or buy a new plan and install it as a second profile.

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