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Vietnam eSIM

Vietnam eSIM

Da Nang, Nha Trang, Ho Chi Minh or Hanoi — land already online. Install your Roamis eSIM before you fly and connect the moment you arrive, with no SIM swap and no roaming bills.

Buy now
  • Delivered in minutes
  • Perfect for a 45-day visa-free trip
  • Keep your number

Vietnam eSIM plans

Choose how many days you’ll travel — validity starts when you connect, not when you buy.

  • 無需換卡，現有手機直接用
  • 落地自動連線
  • 價格透明，無隱藏費用
  • 付款後即時發送 QR 碼
  • 24/7 線上客服
  • 未使用 90 天內退款
取得方式

即時——以 Email 寄送 QR Code

有效期限

購買後 90 天內啟用

未使用 90 天內退款

購買後尚未啟用 eSIM（尚未開啟 QR 碼），90 天內可全額退款。

Select your plan

每日 1GB 高速 · 用盡後無限（最高 128kbps）

TotalNT$310

Why travelers choose Roamis

Four things that actually matter on a trip.

Reliable

We connect through leading Vietnamese networks like Viettel and Vinaphone, so you get a stable signal in the cities, on the coast and at beach resorts.

Fast

Vietnam has wide urban 4G/LTE — plenty of speed for Grab, maps, translation and social.

Simple

No airport SIM-counter queue. One-touch setup — scan, install, done.

Global

One account from Vietnam across Southeast Asia. Top up or add a country when plans change.

Connected in three steps

From checkout to online in minutes.

1

Buy & receive

Pick your plan and get your eSIM QR by email within minutes.

2

Install

Scan the QR and add the eSIM to your phone before you fly.

3

Land & connect

Turn on the line when you arrive — you’re online instantly.

Frequently asked questions

Yes. Roamis connects through major Vietnamese networks like Viettel and Vinaphone, covering Hanoi, Ho Chi Minh City, Da Nang, Nha Trang, Phu Quoc and most urban and coastal areas.

Korean passport holders can enter Vietnam visa-free for 45 days (as of 2026). Your Roamis eSIM gets you online for immigration, Grab and hotel check-in the moment you land. Always confirm current entry rules before you fly.

Validity starts when you install and connect in Vietnam — not when you buy. Set it up before you fly and it begins counting from your first connection on arrival.

Yes, you can share your connection to a laptop or another device. Heavy tethering may be subject to the fair-use terms shown on the plan.

Yes. Vietnam has very few internet restrictions, so Grab, KakaoTalk, Google Maps and translation apps work normally — you just need data.

No. The eSIM runs alongside your existing SIM, so you keep your number for calls and texts while using Roamis for data.

Ready when you are

Get connected before you pack

Set up your travel eSIM today and land already online.

Choose a plan