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Buy in your browser. Your eSIM lands in your inbox, and your phone does the rest.
How it worksSoutheast Asia eSIM
Your eSIM arrives within minutes, starts when you first connect in Southeast Asia, and tops up whenever you need more.
Choose your plan.
Before you buy, just confirm your device is eSIM-compatible and network-unlocked.
Plan details
- Connects on 3G, 4G and 5G where the local network has it
- Hotspot and tethering on plans that support it, where the local network allows
- Keep your own number, data only (no calls or texts)
- Activates on first connection, not at purchase
- Top up any time while your plan is running
Need broader coverage?
Our Global eSIM keeps you connected across 117 countries.
Your eSIM arrives within minutes, starts when you first connect in Southeast Asia, and tops up whenever you need more.
Across Southeast Asia, you're in good hands. Off to Southeast Asia? You're in good hands.
Four things we'll tell you before you pay, not after.
You’ll know your network
200+ networks. Named on every plan. Connected via trusted networks in 195+ destinations.
Explore networks
Unlimited, explained.
A daily full-speed allowance. Then 1 Mbps for the rest of the day. Your full-speed data resets the next day.
Unlimited explained
Emailed within minutes
Buy at the gate if you have to. Install now, ready when you land.
When to install 1 / 4
Networks vary by destination and are listed on each plan. All trade marks are the property of their respective owners. Halo is not affiliated with these operators.
Before you go.
Staying connected across Southeast Asia
It arrives by email within minutes, installs before you fly, and starts counting only when your phone first connects on arrival rather than when you buy it. It runs on CelcomDigi, DTAC and other local networks. Plans run from 1 GB to 20 GB over 7 to 30 days. One plan covers 7 countries, so there is no profile to switch at a border. Every plan carries a 30-day money-back guarantee, any time before you activate.
How much data you'll need
Southeast Asia plans cross borders on one profile, so the allowance has to cover the whole route rather than one stop. Budget for the days you will be moving as well as the days you will be still: navigation and transport apps are the heaviest ordinary use on a trip that crosses borders. The shelf runs 1 GB to 20 GB over 7 to 30 days.
5G
These plans carry 5G where the local network has it, on CelcomDigi, DTAC and other local networks, and fall back to 4G elsewhere.
Updated September 2026
Questions? We've got answers.
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What plans are on sale for Southeast Asia?
Fixed-data Southeast Asia plans come in 1, 3, 5, 10 and 20 GB, in lengths of 7, 15 and 30 days depending on the size. A fixed-data allowance is one pot for the whole plan, and every plan starts counting only when your phone first connects.
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How many countries do Southeast Asia plans cover?
7, on one profile. You install the Southeast Asia eSIM once and it keeps working as you cross between the countries it covers, so there is nothing to swap at a border and no second plan to buy for the next leg. Across the footprint it runs on CelcomDigi, DTAC and other local networks.
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Can I call and send SMS on my Southeast Asia eSIM?
Halo eSIMs are exclusively data-only eSIMs. While you can engage in voice calls and messaging through WhatsApp, Facetime, and other widely used VOIP apps, traditional phone calls and SMS are not supported.
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Is my device compatible with this Southeast Asia eSIM?
Most phones from 2018 onwards support eSIM, including iPhone XR and XS and newer, Pixel 3 and newer, Galaxy S20 and newer. If it's a reasonably recent phone, you're probably fine. Check our device compatibility page if you want to be sure.
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When should I set up my Southeast Asia eSIM?
Before you leave, while you're still on Wi-Fi. Your plan only starts counting when you first connect to a network at your destination, so there's no cost to installing early. Southeast Asia plans run from 7 to 30 days from that first connection. One less thing to sort at the airport.
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Which networks does my Southeast Asia eSIM use?
Each plan lists its own networks and speed policy under Plan details on this page. Which networks a plan uses is set by our network partners and can change without notice, so we show them per plan rather than for the destination as a whole. Your device finds and connects to a supported network on its own when you arrive.
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Can I top up my Southeast Asia eSIM?
Yes. Running low? Purchase another plan for the same destination from your order page. The new data gets added to your existing eSIM. No reinstall needed.
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Can I hotspot with my Southeast Asia eSIM?
Hotspot availability depends on the plan. Halo adds no separate hotspot cap and does not meter hotspot data differently, so on plans that support it you can share your connection with a laptop, tablet or travel companion where the local network allows. Hotspot is provided by the network operator in Southeast Asia rather than by Halo, so it is not something we can guarantee on every plan.
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