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South East Asia eSIM
A 5 GB South East Asia eSIM costs £10.99 for 30 days across 8 countries with 5G. Plans start at £3.99 for 1 GB. Delivered by email in seconds.
Eight countries, one eSIM. Indonesia, Cambodia, Laos, Malaysia, the Philippines, Thailand, Timor-Leste and Vietnam all share one plan, so a trip that jumps between them needs no SIM swap at the airport or at the border.
- 5G and 4G
- 8 countries on one eSIM
- Top up anytime
- Instant email delivery
Your South East Asia eSIM in two questions
Which South East Asia eSIM plan fits your route?
Many routes here cross a border, so pick your plan by how long you're away and how much you'll use your phone, not by country, and you can top up any plan if the trip runs long.
- A three-day hop, Hanoi to Siem Reap: standard use fits the 3 GB for 15 days plan.
- Two weeks, Bangkok to Siem Reap to Hanoi: heavy use fits the 2 GB a day for 15 days plan.
- A month from Bangkok to Ho Chi Minh City: standard use fits the 20 GB for 30 days plan.
- A trip to Indonesia alone, say Bali or Yogyakarta: Indonesia's own eSIM is the one to pick for that trip.
All 41 South East Asia eSIM plans
Prices include any taxes. Price per GB shown so you can compare at a glance.
| Data | Valid for | Price | Per GB | Top-up | Buy |
|---|---|---|---|---|---|
| 1 GB · 7 days | £3.99 / €4.99 / $4.99 | £3.99 / €4.99 / $4.99 | Choose | ||
| 3 GB · 15 days | £6.99 / €7.99 / $8.99 | £2.33 / €2.66 / $3.00 | Choose | ||
| 3 GB · 30 days | £6.99 / €7.99 / $8.99 | £2.33 / €2.66 / $3.00 | Choose | ||
| 5 GB · 30 days | £10.99 / €12.99 / $13.99 | £2.20 / €2.60 / $2.80 | Choose | ||
| 10 GB · 30 days | £18.99 / €22.99 / $24.99 | £1.90 / €2.30 / $2.50 | Choose | ||
| 20 GB · 30 days | £38.99 / €45.99 / $49.99 | £1.95 / €2.30 / $2.50 | Choose |
8 countries on one eSIM
Cross borders without changing anything: your eSIM switches to the local network in each country by itself.
| Country | Networks | Speed |
|---|---|---|
 Indonesia | Indosat, Telkomsel, XL | 5G |
 Cambodia | Cellcard, Metfone | 4G |
 Laos | Lao Telecom | 5G |
 Malaysia | CelcomDigi, Maxis | 5G |
 Philippines | Globe, SMART | 5G |
 Thailand | AIS, DTAC, TrueMove H | 5G |
 Timor-Leste | Telemor | 4G |
 Vietnam | MobiFone, Viettel Mobile, Vinaphone | 5G |
Good to know
- Data only: your own number keeps working for calls and texts
- Hotspot works where your phone and the network allow it
- Plans start when you first connect; install within 180 days
- Your data routes through Singapore, so some sites may show that country
- Top up the same eSIM any time, no new QR code
Which countries and networks does the South East Asia eSIM cover?
Eight countries, six of them with 5G. One eSIM covers all eight, from Thailand to Timor-Leste, and your phone switches network by itself at each border. These are the networks you'll join in the places travellers visit most:
- Thailand: AIS, DTAC and TrueMove H
- Indonesia: Indosat, Telkomsel and XL
- Vietnam: MobiFone, Viettel Mobile and Vinaphone
- Cambodia: Cellcard and Metfone
Your data reaches the internet through Singapore, a normal setup for travel eSIMs. You can read more about what that means for your IP address.
How much data do you need in South East Asia?
Light: maps, messages, email (about 0.25 GB a day). Standard: plus social, music, some video (about 0.7 GB a day). Heavy: plus streaming, video calls, hotspot (about 1.8 GB a day).
3 days
- Light · about 800 MB1 GB · 7 days · £3.99 / €4.99 / $4.99
- Standard · about 2 GB3 GB · 15 days · £6.99 / €7.99 / $8.99
- Heavy · about 5 GB1 GB a day · 7 days · £10.99 / €12.99 / $14.49
7 days
- Light · about 2 GB3 GB · 15 days · £6.99 / €7.99 / $8.99
- Standard · about 5 GB1 GB a day · 7 days · £10.99 / €12.99 / $14.49
- Heavy · about 13 GB1 GB a day · 15 days · £15.99 / €18.99 / $20.49
14 days
- Light · about 4 GB5 GB · 30 days · £10.99 / €12.99 / $13.99
- Standard · about 10 GB1 GB a day · 15 days · £15.99 / €18.99 / $20.49
- Heavy · about 25 GB2 GB a day · 15 days · £29.99 / €35.99 / $38.99
30 days
- Light · about 8 GB10 GB · 30 days · £18.99 / €22.99 / $24.99
- Standard · about 21 GB1 GB a day · 30 days · £31.49 / €37.49 / $40.99
- Heavy · about 54 GB2 GB a day · 30 days · £59.49 / €70.99 / $76.99
How to set up your South East Asia eSIM
Install at home
On Wi-Fi, tap Install on iPhone (iOS 17.4+), scan the QR code, or type the two codes from your email.
Switch on when you land
Turn on your eSIM line, choose it for mobile data and switch Data Roaming on for that line.
You're online
Your phone joins AIS and your plan starts. Check data left on your eSIM page.
Using one eSIM across South East Asia: tips for crossing borders
One eSIM covers all eight countries on your route, so you can travel from Bangkok to Bali without swapping a SIM. A few simple habits make each border crossing easier.
- Set up at home: Install your eSIM before you fly, then keep data roaming switched on for the eSIM line at every border. Turn on data roaming
- Apps that matter: In Thailand, Grab and Bolt cover rides, and LINE is the main way to message locals, hotels and tour operators. In Indonesia, Grab, Gojek and inDrive are the ride apps to know, and WhatsApp is the app for messages. In Vietnam, Grab, Be and Xanh SM cover rides, Zalo and Messenger are the apps to message with, and Telegram is blocked.
- Keep your home number: Your home number can stay on your phone for calls and texts. See how to keep WhatsApp on it.
- Top up on the road: Every plan can be topped up, so you can add more data mid-trip.
South East Asia eSIM questions
How much is an eSIM for South East Asia?
South East Asia eSIMs start at £3.99 for 1 GB over 7 days. A 5 GB plan for 30 days costs £10.99. Prices include any taxes and show in pounds, euros or dollars.
Which countries does the South East Asia eSIM cover?
One eSIM works in all 8 countries: Indonesia, Cambodia, Laos, Malaysia, Philippines, Thailand, Timor-Leste and Vietnam. The full list with the network in each country is on this page.
When does my South East Asia eSIM start?
Most plans start the moment your eSIM first connects to a network in South East Asia, so you can buy and install it at home before you fly. Install it within 180 days of buying.
Can I top up my South East Asia eSIM?
Yes. Most South East Asia plans can be topped up from your eSIM page in two taps, with no new QR code. The plan table on this page shows which ones.
Does it come with a phone number?
Every eSIMology plan is data only. Keep your own SIM switched on for calls and texts, and use WhatsApp, FaceTime or any calling app over your eSIM's data.
What if my plans change?
Cancel an eSIM you haven't installed within 30 days for a full refund to your card, in two taps from your eSIM page.
Does the South East Asia eSIM work in Timor-Leste?
Yes. Timor-Leste is one of its eight countries, where the eSIM uses the Telemor network. You can carry one plan across the whole route, so there's no need to buy a local SIM at the border.
Can I use the South East Asia eSIM in Laos?
Yes. Laos is covered, and there the eSIM uses the Lao Telecom network. WhatsApp and Facebook Messenger are the messaging apps to have ready, so set them up before you land.
Does Telegram work in Vietnam with the South East Asia eSIM?
No. Telegram is blocked in Vietnam. Zalo and Messenger are the apps to message people there, and Telegram is one of the messaging apps in Cambodia, if you're heading there too.
Is there 5G on the South East Asia eSIM?
Yes, in six of its eight countries. To use 5G, your phone has to support it, so check the phone list and see which models work before you travel.
Can I use Grab in Indonesia with the South East Asia eSIM?
Yes. Grab is one of three ride apps used in Indonesia, alongside Gojek and inDrive, so you have choices once you land. Keep the app installed and signed in before you leave home so booking is quick.
Ready for South East Asia?
Buy now, install today, and your plan waits until you land. Full refund if not installed.