Data only eSIMs
Travel eSIM Thailand
Paying roaming fees in Thailand? That’s a rookie move. Use our eSIM instead.
4.9
(420)
Set up in a few minutes
Unlimited hotspotting
Add more data with top ups
Install before travel
Set up in a few minutes
Unlimited hotspotting
Add more data with top ups
Install before travel
Plans & prices
Thailand plans
No roaming fees, no SIM swap, no drama. Buy your Thailand eSIM online, scan the QR code, and you're connected to AIS the second you land in Bangkok, Phuket, Chiang Mai or anywhere else on your trip.
$22 AUD
$29 AUD
$45 AUD
$79 AUD
$105 AUD
$3.50/day
limited to 1 Mbps
Set up in a few minutes
Unlimited hotspotting
Add more data with top ups
Install before travel
Say whaaaaat
All pros, no cons
100% money back guarantee
Plans changed, device incompatible or locked, can't get it working, we've got you covered - see our .
Data-only eSIM - no phone number
Use internet based apps like WhatsApp and Messenger as normal. Note: you can't make traditional calls or SMS (yet).
Reliable 4G/5G connection
Powered by the best networks in Thailand including AIS.
Multiple data options
We have plans for 5, 15 or 30 days starting at only 1GB right up to unlimited for most destinations.
Unlimited hotspotting (tethering)
Hotspot to your laptop, tablet, to your friends, to whoever with our limitless hotspotting.
Auto-activates on arrival
Automatically activates when you arrive in Thailand. Just update settings (we'll send instructions), and you're connected.
Install up to 90 days before travel
Install your Thailand eSIM anytime within 90 days before you travel, the plan won't start until you arrive in Thailand.
Keep your current number
You can have multiple eSIMs installed and switch them on and off as you like.
How to use travel esims
How it works
If you haven't used a travel eSIM before, you're in for a treat. It only takes a few minutes to setup and it's a fraction of the cost of roaming! See WTF is eSIM.
1. Quick phone check
Let's make sure your phone's on board. Our eSIM compatibility checker has all of the answers.
2. Choose a plan, enter your details
Choose a plan for your destination, enter your details and your payment information.
4. Auto-activated on arrival
Update settings on arrival (we'll email these to you) and boom, you're connected. Check your usage in the ZenSim app.
The nitty gritty
Thailand eSIM FAQs
Yes, especially compared to what your home carrier will try to charge you for roaming. A Thailand travel eSIM gets you affordable prepaid data with no physical SIM swap required, so you keep your home number active while still having fast mobile data in Thailand for maps, messaging and social media. It installs before you even leave home and auto-activates on arrival, so there's no faffing about at the airport.
It does. Your ZenSim eSIM Thailand plan runs on reliable local networks that reach well beyond Bangkok, covering popular destinations like Phuket, Chiang Mai, Krabi and the islands. Heading somewhere properly remote is the one place any network can get patchy, but for the vast majority of tourist and travel routes across Thailand, you'll have solid coverage for maps, messages and streaming.
Your Thailand travel eSIM is a data-only eSIM, so it doesn't touch your existing SIM at all. That means no physical SIM swap required. Your existing SIM stays exactly as it was, and the ZenSim eSIM quietly handles all your mobile data in Thailand in the background as a separate line, thanks to dual SIM support on most modern phones.
As early as you like. You can install your Thailand travel eSIM up to 90 days before you fly, and the plan simply won't start until you actually arrive. So there's no downside to sorting it out well ahead of time. Once you land, your eSIM auto-activates and you're straight onto mobile data in Thailand without any last-minute app store scrambling.
Yes, our Thailand travel eSIM includes an unlimited data option for 5, 15 or 30 days. Unlimited plans come with 3GB per day of high-speed data, which covers the vast majority of travellers without any issue. If you do go over that in a single day, your speed drops to 1Mbps rather than cutting out completely, so you're not left offline, just running slower until it resets at midnight. Need more time? You can easily extend or top up your Thailand eSIM through the ZenSim app.
These eSIMs don’t include voice minutes - data only. For any calling or texting, you’ll need to rely on VoIP or messaging apps such as WhatsApp, Viber, or Messenger.
Yes! Your Thailand eSIM can be installed as early as 30 days before you travel. It won’t start until you touch down in Thailand.
Installing beforehand means no setup stress on arrival, and it won’t use any data or days until you land.
If you get an activation warning on iPhone when installing before arriving, that’s normal - check our eSIM Troubleshooting Guide for details.
No, our Thailand travel eSIMs do not include any phone number - they strictly provide internet data. For calls, use data - driven apps such as WhatsApp, Messenger, or Facetime.
Your eSIM will activate automatically when you land in Thailand. However, we recommend installing the Thailand Travel eSIM beforehand (activation happens on arrival).
Simply scan the QR code provided or install the eSIM via the ZenSim app while on WiFi. Once you touch down in Thailand, the eSIM will go live.
Trouble activating? See our eSIM Troubleshooting Guide or contact us for help ☺️
Your Thailand travel eSIM kicks in as soon as you arrive in Thailand - provided it was installed beforehand.
If you install it after you land, it should start working right away.
If you run into trouble, see our eSIM Troubleshooting Guide or get in touch with us.
Good question! Opting for a travel eSIM instead of roaming in Thailand offers clear advantages:
Lower Costs: Say goodbye to outrageous roaming bills by switching to a local travel package designed for Thailand.
Seamless Switching: Change between data plans without fumbling with physical SIM cards - perfect for spontaneous travellers.
Budget Control: Track data usage in real time and avoid surprise charges or overages.
Data and plan days only kick in when you arrive in Thailand. Installing earlier just prepares it for activation which happens automatically when you arrive in Thailand.
Install over WiFi before your trip to get connected from the minute you touch down.
If you have trouble connecting, see our eSIM Troubleshooting Guide or message us for assistance.
Definitely! ZenSim supports eSIM usage in over 200 countries, so Thailand is covered. If you need multi-country coverage, take a look at our regional eSIM options on the Travel eSIMs page.
Signal & Connectivity: If you’re stuck without data, follow our detailed troubleshooting guide. If issues persist, contact support and we’ll fix it promptly.
Install Assistance: For help installing, consult our installation walkthrough. Still need help? Reach out and we’ll guide you step by step.
Other Support Requests: For anything else, head to our contact page.
Absolutely. Nearly all of our Travel eSIMs can be extended directly inside the ZenSim app in just a few taps. You can top up extra data, more days, or even include an additional country on the same eSIM, you’ll find everything in the Zen Garden top up section.
Just sign in, head to the Zen Garden, and you’ll spot the option to top up your eSIM straight away.
Top up plan details: The Thailand options mirror the website plans, with an added 10% savings.
Longer trips: If your adventure goes beyond 30 days, you can stack as many top ups as you like. Each one activates only after the previous plan ends, so you can buy them in advance without affecting your current eSIM.
Add more countries: Many of our eSIMs now support multi country top ups. For example, if you're using a Europe eSIM and have a stopover in Dubai, simply add a Dubai top up and it will activate automatically when you land without needing a new installation.
Not exactly. Once your Thailand eSIM is active, it’s tied to that country.
If you're visiting more than one place, our regional Travel eSIMs offer broader coverage so you can roam freely across multiple destinations.
Very true! Not only that, you can refer as many people as you like to buy our Thailand eSIM, you'll earn a A$5 voucher for each referral - and they will also save A$5 on their order.
There's a couple of things to be aware of, firstly they have to be a new customer for this to apply, and you as the referrer can only use one A$5 voucher per order if you happen to refer a whole lot of friends.
You can view your referral performance and grab your referral URL in the ZenSim app. Visit our terms for more info.
Only if you're on one of our unlimited plans - these come with a 3GB daily allowance, which covers the vast majority of travellers comfortably, since most people only use under 1GB a day.
Go over 3GB in a day and your speed will drop to 1Mbps for the rest of that day, resetting back to full speed at midnight.
If you've gone with a fixed-data plan (like 10GB or 20GB) instead of unlimited, there's no daily cap to worry about - you can use your data however you like until it's gone. We'll notify you before you run out, and you can top up instantly through the ZenSim app.
It won't activate the moment you buy it - your Thailand eSIM won't touch your data or days until you actually arrive, so there's no downside to installing it in advance.
As long as it's installed beforehand, it'll activate itself the second you touch down, and that's the moment your plan officially begins.
As for running out - your eSIM expires once your data or days are gone, whichever comes first (just the days, if you're on unlimited). Buy a 30-day plan and it'll run out 30 days after arrival in Thailand, not 30 days after purchase.
Easy way to check - just run your phone through our eSIM compatibility checker and you'll know in seconds whether it'll work with our Thailand eSIM and networks.
Still not sure, or something looks off? Reach out to us and we'll sort it out. And if it turns out your phone genuinely can't run the eSIM, our refund policy has you covered with a full refund - so there's no risk in grabbing a plan and giving it a go.
We've got a 100% money back guarantee for exactly this kind of situation.
That covers trip cancellations, phones that turn out not to be eSIM-compatible, or just a change of plans that means you no longer need it.
Our full refund policy spells it all out, but the short version is: unable to install or use the eSIM means a full refund, every time.
eSIM options for other destinations
Thailand eSIM: Sorted Before You Even Land
An eSIM for Thailand that avoids roaming fees
ZenSim's Thailand travel eSIM gives you affordable prepaid mobile data the moment you land, so you can avoid roaming fees and the horror-story bill waiting for you when you get home. Whether you're a first-time tourist, a business traveller with back-to-back meetings, or a digital nomad working from a beach in Krabi, there's a plan built for how you actually travel.
Instant QR code or one-tap install, no shop queues involved
Buy your eSIM for Thailand online before you fly, then install it in a couple of minutes by scanning the QR code we send you, or skip needing a second device and install with one tap straight through the ZenSim app instead. No physical SIM swap required, so your existing SIM stays right where it is, and your new eSIM handles the data as a separate line.
Auto-activates the second you land
You don't need to remember to switch anything on. Your Thailand eSIM auto-activates on arrival, so you can go straight from the plane to Google Maps without hunting for airport WiFi. Update your settings once (we email you exactly what to do), and you're connected for maps, messaging, socials and everything else you need on the ground.
Powered by Thailand's best local networks
Your ZenSim eSIM connects to AIS, giving you a reliable 4G and 5G signal in the places travellers actually go, from Bangkok's BTS lines to the beaches of Krabi and the mountains around Chiang Mai. No hunting for signal or relying on patchy hotel WiFi, just solid mobile data in Thailand wherever your trip takes you.
Mobile data in Thailand from Bangkok to the islands
Your ZenSim eSIM Thailand plan isn't limited to one city. It covers popular spots like Bangkok, Phuket, Chiang Mai, Krabi and the islands, riding on reliable local networks so you can navigate the BTS, book a longtail boat, or find your hostel in Chiang Mai's old town without losing signal. Sorting out your route first? Our best eSIM for Thailand guide breaks down what to look for before you buy.
Flexible data, including unlimited plans
Quick island-hopping trip or a few months working remotely? ZenSim's Thailand travel eSIM comes in flexible prepaid options for 5, 15 or 30 days, starting from as little as 1GB right up to unlimited data. So you're never stuck paying for data you'll never use, or stressing about hitting a cap mid-trip. Running low? Topping up more data or days is a couple of taps away in the ZenSim app.
Top 3 Things to Do in Thailand
1. Explore Bangkok's Grand Palace and Wat Arun
Bangkok throws a lot at first-time visitors, and the Grand Palace is where most people rightly start. Built in 1782 as the official residence of the Kings of Siam, the complex is a sprawl of gleaming spires, intricate mosaics and gold-leafed rooftops that somehow still manages to feel more like a living monument than a museum piece. Inside the grounds, Wat Phra Kaew houses the revered Emerald Buddha, one of the most sacred objects in Thai Buddhism, and it's worth taking your time here rather than rushing the courtyards.
Just across the Chao Phraya River sits Wat Arun, the Temple of Dawn, easily reached by a short and cheap ferry ride from near the palace. Its central prang is decorated with thousands of tiny porcelain fragments that catch the light differently depending on the time of day, and climbing partway up the steep steps rewards you with sweeping views back over the river and the old city skyline.
Around both sites, the surrounding Rattanakosin district is dense with smaller temples, street food stalls and canal-side neighbourhoods worth wandering through once the main crowds thin out. Few places pack this much of Thailand's royal and religious history into such a walkable stretch of riverfront.
2. Unwind on Railay Beach, Krabi
Cut off from the mainland by towering limestone cliffs, Railay Beach is only reachable by longtail boat, which keeps it feeling worlds away from the pace of Bangkok despite being part of the Krabi coastline. The dramatic karst formations that wrap around the peninsula are what draw serious rock climbers from all over the world, with routes suited to complete beginners right up to seasoned pros, many of them finishing with a direct view out over the Andaman Sea.
If climbing isn't your thing, the beaches alone are worth the trip. Railay East is quieter and lined with laid-back bars, while Railay West and Phra Nang Beach offer the kind of turquoise water and powder-white sand that make this stretch of coast so photographed. A short walk or kayak paddle also gets you to hidden lagoons and viewpoints tucked inside the cliffs, including the Phra Nang Cave, where locals leave offerings for good fortune at sea.
Whether you're spending a single afternoon or basing yourself here for a few days, Railay is one of those spots in Thailand where the geography does most of the work, and it rarely disappoints.
3. Wander Chiang Mai's Old City Temples
Chiang Mai moves at a noticeably slower pace than Bangkok, and nowhere is that more obvious than inside its moated Old City, where more than thirty temples sit within walking distance of one another. Wat Phra Singh is one of the most important, home to a highly revered Buddha image and some of the finest examples of classic Lanna-style architecture in northern Thailand. Nearby, Wat Chedi Luang centres on a massive, partially ruined chedi that once stood as one of the tallest structures in the entire kingdom.
For the best view of the city, head just outside town to Wat Phra That Doi Suthep, perched on a mountainside a short drive from the centre. The climb up its golden staircase, flanked by a naga serpent balustrade, leads to a shimmering chedi and a lookout that takes in the whole Chiang Mai valley below, especially rewarding around sunset.
Back in the Old City, the temples sit alongside night markets, cafes housed in converted teak buildings, and quiet lanes that invite slow, aimless exploring. Between the history, the food and the mountains on the horizon, Chiang Mai offers a side of Thailand that feels distinctly different from its beaches and big-city energy.
