Southeast Asia eSIM: Vietnam, Cambodia, Thailand & More

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Southeast Asia

eSIM data plans for Southeast Asia

One eSIM for Vietnam, Cambodia, Thailand, Laos and beyond

Works on Most Phones

If there’s ever an issue, you’re covered with a full refund.

Quick & Simple Setup

Activate in minutes with clear instructions — no tech skills needed.

We’re Here to Help

Reach us anytime via live chat or email at [email protected].

Instant Delivery  ·  Money-Back Guarantee  ·  24/7 Support

8 countries

1GB

High Speed

7 days

Plan duration

$3.80 USD

$3.80 per GB
View Plan
Instant digital delivery
Essentials
Music
Moderate Social
Heavy Social
Streaming
Great for maps and messaging.

8 countries

3GB

High Speed

30 days

Plan duration

$7.18 USD

$2.39 per GB
View Plan
Instant digital delivery
Essentials
Music
Moderate Social
Heavy Social
Streaming
Great for chat, maps and browsing.

8 countries

5GB

High Speed

30 days

Plan duration

$9.64 USD

$1.93 per GB
View Plan
Instant digital delivery
Essentials
Music
Moderate Social
Heavy Social
Streaming
Great for music and podcasts.

8 countries

10GB

High Speed

30 days

Plan duration

$14.77 USD

$1.48 per GB
View Plan
Instant digital delivery
Essentials
Music
Moderate Social
Heavy Social
Streaming
Great for social and photos.

Covered countries (8): Cambodia, Indonesia, Laos, Malaysia, Philippines, Thailand, Timor-Leste, Vietnam.

Prefer a single-country plan?

Shop an eSIM for just one destination — tap a country to see its plans.

Why one eSIM for Southeast Asia?

Southeast Asia is made for multi-country trips. Travelers fly into Bangkok or Ho Chi Minh City, cross overland to Siem Reap for Angkor Wat, take the slow boat down the Mekong to Luang Prabang, and finish on the beaches of Bali or Palawan. Borders come up every week or two, and buying a new SIM card at each one costs time and money.

One eSIM-Now Southeast Asia plan covers the whole route. Install it before you leave, and it connects as soon as you land. When you cross into the next country it switches to a local network on its own, so there's no SIM swapping and no roaming fees.

This is also the plan to pick if your trip includes Cambodia. Our broader Asia plan doesn't cover it, and this one does.

Which networks will I use?

The plan connects to the same major local networks as our single-country plans:

  • Thailand: AIS, DTAC and TrueMove H
  • Vietnam: Viettel, MobiFone and Vinaphone
  • Cambodia: Cellcard and Metfone
  • Laos: Lao Telecom
  • Malaysia: CelcomDigi and Maxis
  • Indonesia: Telkomsel, Indosat and XL
  • Philippines: Globe and Smart
  • Timor-Leste: Telemor

Singapore isn't included. If your trip starts or ends there, look at our Singapore, Malaysia & Thailand plan or add a separate Singapore eSIM.

How much data do you need?

  • Light use (messaging, maps, email): 3GB for 2 weeks
  • Moderate use (social media, photos, ride-hailing apps): 5-10GB for 2-4 weeks
  • Heavy use (video calls, streaming, remote work): 20GB for a month

Plans last up to 30 days. If your trip runs longer, you can top up the same eSIM from your order page instead of buying a new one.

eSIM vs roaming

eSIM-Now Phone Carrier Roaming
Cost One upfront price per plan $5-15/day or per-MB charges
Activation Instant (scan a QR code) Call your carrier before the trip
Coverage 8 Southeast Asian countries on one plan Varies by carrier agreements
Data control Choose your exact plan size Often throttled after limits
Contract No contract, pay once Tied to your phone plan

How eSIM Now Works

1

Choose Destination & Plan

Choose Destination & Plan

2

Install eSIM

Install eSIM

3

Activate eSIM

Activate eSIM

4

Monitor

Monitor

Frequently Asked Questions

  • How do I activate my eSIM after purchasing?

    After completing your purchase, you’ll receive an email with your eSIM details and a step-by-step activation guide. Most users can activate their eSIM in less than 5 minutes.

  • Will this eSIM work with my phone?

    Our eSIMs are compatible with most modern devices that support eSIM technology. To check compatibility, ensure your phone is unlocked and supports eSIM. If you’re unsure, contact us before purchasing.

  • What happens if I run out of data?

    You’ll receive notifications as you approach your data limit. If you run out of data, you can easily purchase additional plans directly from our website.

  • Can I keep using my primary SIM while using the eSIM?

    Yes, you can use your primary SIM for calls and texts while using the eSIM for data. Just make sure to disable data roaming on your primary SIM to avoid unexpected charges.

  • Is there any additional cost or hidden fees?

    No, what you see at checkout is what you pay. There are no hidden fees or additional costs after purchase.

  • What networks will this eSIM connect to?

    This eSIM connects to top-tier networks like T-Mobile and Verizon in the United States, ensuring fast and reliable coverage throughout your trip.

  • How long is the eSIM valid for?

    Once you activate the eSIM, you can use it as the duration in the plan stats. If you don’t activate it immediately, you have up to 180 days to use it after purchase.

  • Can I get a refund if the eSIM doesn’t work or I change my mind?

    Refunds are available as long as the eSIM has not been used or activated. If you experience any issues, our support team will assist you to ensure a smooth resolution or refund if eligible.

  • What if I face issues during activation or usage?

    We provide 24/7 customer support to help you with any issues, whether it’s activation or connectivity. Just reach out to us via email ([email protected]) or live chat.

  • How secure is the checkout process?

    We use industry-standard SSL encryption to ensure your payment information is 100% secure. We also accept trusted payment methods like Visa, Mastercard, and PayPal.

FAQ

Does this eSIM work in both Vietnam and Cambodia?

Yes. It covers Vietnam and Cambodia, plus Thailand, Laos, Malaysia, Indonesia, the Philippines and Timor-Leste. It switches networks automatically when you cross a border.

When does my plan start?

Validity starts when the eSIM first connects to a network in one of the covered countries, not when you buy it. You can install it at home before you fly.

Do I get a phone number?

No. It's a data-only eSIM. You can still call and message over apps like WhatsApp, and your home SIM can stay on for SMS codes from your bank.

What do I need to turn on when I arrive?

Turn Data Roaming ON for the eSIM line and choose it for mobile data. Keep Data Roaming OFF on your home SIM so your carrier doesn't charge you.

Not Sure What Plan to Choose?

Calculate your travel data needs

What will you use data for?
Your Data Package Recommendation
 GB

Estimated usage: GB - GB

Recommendation based on typical to heavy usage patterns
Find plans with this much data →

What Our Customers are Saying

Google

"I used esim-now for my trip to Italy. The setup was straightforward, and I stayed connected everywhere I went!"

Italy Jade SimmonsPurchased eSIM for Italy
Google

"esim-now was a lifesaver on my cross-country business trip in the US. Zero downtime and top-notch speed!"

United States Daniel JeffersonPurchased eSIM for the USA
Google

"I traveled to Australia with my family and depended on esim-now for constant connectivity—it did not disappoint!"

Australia Aiko SatoPurchased eSIM for Australia
Google

"Germany was amazing, and so was esim-now. I never worried about coverage or speed the entire trip."

Germany Jonathan BlakePurchased eSIM for Germany
Google

"I was worried about staying connected during my trip to Japan, but esim-now was perfect. Quick setup and super reliable signal."

Japan Aditya SinghPurchased eSIM for Japan
Google

"esim-now made my trip to Spain unforgettable. I had reliable data access from major cities to smaller towns!

Spain Marta SilvaPurchased eSIM for Spain
Google

"Landed at CDG, turned on data roaming, and I was online before passport control. The hotspot kept my laptop connected all week."

France Liam O'ConnorPurchased eSIM for France
Google

"Three weeks across Bangkok and the islands. It just worked."

Thailand Priya NairPurchased eSIM for Thailand
Google

"My plans changed mid-trip, so I topped up from my phone in about a minute. No new SIM, no store visit."

United Kingdom Lucas MeyerPurchased eSIM for the UK
Google

"Fast enough for video calls on the KTX between Seoul and Busan. Five-minute setup at the airport."

South Korea Sarah ChenPurchased eSIM for South Korea
Google

"Saved me a fortune in roaming fees. I had coverage even on the mountain trains in the Alps."

Switzerland Noah WilliamsPurchased eSIM for Switzerland
Google

"Istanbul and Cappadocia with zero signal drama. The QR code arrived seconds after I paid."

Turkey Olivia GrantPurchased eSIM for Turkey

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