Koh Samui eSIM Data Plans
3 GB / 30 days
$3.90
Why travellers choose AeroSims
QR code by email in seconds
Validity starts on arrival, not at purchase
Connects to local partner networks
Need more? Buy another plan anytime
All plans & prices
| Plan | Validity (days) | Price (USD) | Per GB |
|---|---|---|---|
| 3 GB | 30 | $3.90 | $1.30 |
| 5 GB | 30 | $5.90 | $1.18 |
| 10 GB | 30 | $9.90 | $0.99 |
| 20 GB | 30 | $16.90 | $0.85 |
| 50 GB | 30 | $48.90 | $0.98 |
| 50 GB | 180 | $64.90 | $1.30 |
Delivered in secondsNo passport, no SIM swap24/7 support
Network & coverage
Stay connected in Koh Samui
Your eSIM connects to TrueMove H and DTAC — both with 5G — across Koh Samui, and it keeps working across Thailand. The phone takes whichever network is strongest where you stand.
Where you will use it
Chaweng and LamaiBophut and Fisherman's Villagethe quiet south and westthe piers for Koh Phangan and Koh Tao
TrueMove H
5G coverage across Koh Samui and on through Thailand.
DTAC
5G coverage across Koh Samui and on through Thailand.
Choose your data
The plan that fits your trip
Fixed data, one payment — pick the size that matches how you travel in Koh Samui.
A week at a resort
smallest planResort Wi-Fi plus data for the ring road.
Island hopping
one step upFerries to Phangan and Tao, offline in between.
MOST CHOSEN
Two weeks in the Gulf
a larger planSeveral islands, constant transfers.
Samui plus Bangkok
unlimited fits betterDomestic flights on top.
Traveller's guide
Staying connected in Koh Samui
A weak connection does not just feel slow — it wastes your plan. Pages half-load and reload, uploads restart, apps retry in the background. Sitting on a solid network is part of what makes a fixed plan last the whole trip.
In Koh Samui the biggest single draw is ferry days and the ring road, both long stretches without Wi-Fi. Download the offline map before you fly and let the eSIM handle live traffic only.
Samui is a hub for the Gulf islands, so the same eSIM usually has to keep working on Koh Phangan and Koh Tao — the ferries are exactly where a country-wide plan proves itself.
What's included
Everything you need in Koh Samui
One price, no meter
Bought once, and the trip carries no further cost.
Nothing burns before you land
Install it the day you book — it stays dormant until it first connects.
Need more? Buy another
No top-ups — a second package arrives by email and installs alongside the first.
No counter, no queue
Nothing to collect at USM.
Instant delivery
Your QR code arrives by email in seconds — no shipping, no wait.
Ready for local apps
Works with Grab, Bolt and Google Maps and everything else you use.
Device support
Works on your phone
Almost every phone from the last few years supports eSIM. Not sure? Dial *#06# — if an EID number appears, you're good to go.
iPhone
iPhone XS, XR and every model since.
Samsung Galaxy
Galaxy S20 and newer, Z Flip / Z Fold, Note 20.
Google Pixel
Pixel 3 and newer.
Other Android
Most modern flagships from Motorola, OnePlus, Oppo and more.
Why eSIM
AeroSims vs a local SIM vs roaming in Koh Samui
| AeroSims eSIM | SIM at USM | Roaming | |
|---|---|---|---|
| Ready when you land | After the queue | ||
| Passport / ID needed | None | Often required | None |
| Price known before you fly | Rarely | ||
| Keep your own number | |||
| Works across the rest of Thailand |
How it works
Connected in 3 simple steps
1
Whenever you like
Scan the QR code at home over Wi-Fi. Nothing is used up.
2
On landing at USM
Turn off flight mode.
3
Turn on data roaming
The step most people forget. Your home SIM stays in the phone for bank codes, with its data switched off.
FAQ
Questions, answered
Will the Koh Samui eSIM work on my phone?
Any eSIM-capable, carrier-unlocked handset — iPhone XS and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Dial *#06#; an EID number means yes.
How fast is the data in Koh Samui?
4G and 5G where the local network provides it. Speed varies by area and time of day, as it does for everyone on the same network.
Do I need a passport or registration?
No. That requirement applies to physical SIM cards bought locally, not to this eSIM.
When does my plan start?
On the first connection to a local network — when you switch off flight mode at USM. Not when you pay.
What happens when my data runs out?
Your connection simply pauses — no surprise bills, ever. To keep going, buy another package for the same destination. If that happens often, the unlimited plan is the cheaper answer.
Can I add data to an eSIM I already have?
Not on a data package — the amount of data is fixed, so nothing is added to an eSIM that is already running. If you need more, another package for the same destination arrives by email and installs alongside the eSIM you already have. Our unlimited plans work differently: those can be extended by extra days while they are still active.
Can I keep my normal number for calls and texts?
Yes. Keep the home line active for SMS codes with its data off, and let the eSIM carry the data.
Can I use it as a mobile hotspot in Koh Samui?
Yes. Bear in mind a second device draws from the same plan.
Does it work outside Koh Samui?
Yes — it is a Thailand-wide plan.
Staying longer than a week?
Unlimited is billed per day and the daily rate falls the longer you stay — same networks, no counting.
Ready to explore Koh Samui?
Choose your plan above and get instant access — delivered to your inbox in seconds.
4G/5G · instant delivery · 30-day guarantee
