Thailand eSIM — Bangkok & Islands Travel Data
Bangkok, Chiang Mai and the islands — Grab, maps and messaging from the moment you land.
- Networks: TrueMove H 5G, DTAC 5G
- 4G/LTE and 5G where the local network supports it
- Hotspot and tethering supported
- Validity starts on first connection in Thailand, not at purchase
- Data only — no phone number, no calls, no SMS
- Install now, travel later — usable for 180 days after purchase
How the Daily Data plan works
This plan gives you 1GB of full-speed data every day, renewing roughly every 24 hours for the number of days you choose (7, 15 or 30). If you use your daily 1GB, your connection does not stop - it continues at a reduced 512 Kbps speed until the next day starts, so you are never fully cut off. Hotspot is supported, same as on our standard plans. Choose your total trip length when you buy: the number of days is fixed at purchase, and extra days cannot be added to the same eSIM later - buy a new plan if your trip runs longer than planned.
Requires an eSIM-compatible, carrier-unlocked device. Check the Device Compatibility page before buying, and see the Fair Usage Policy for how the allowance is measured.
Delivered in minutes
QR code by email, right after payment
180-day refund
Full refund if you never install it
Keep your number
Your own SIM stays in the phone
Data only
No calls or SMS — apps work as usual
Thailand travel data eSIM
What is a Thailand eSIM?
A Thailand eSIM gives you instant data access the moment you step off the plane, letting you navigate bustling Bangkok streets, explore Chiang Mai's temples, or hop between the islands without hunting for a local SIM. It works on compatible phones, so you keep your home number while staying connected to maps, ride‑hailing, and messaging apps throughout your trip.
In Thailand the eSIM connects to TrueMove H 5G and DTAC 5G networks. Your data allowance is deducted as you use it, whether you are checking train schedules in Chiang Mai or ordering food in Bangkok, and the plan remains active for the selected duration regardless of daily usage.
Local networks
Which networks you connect to in Thailand
When you activate the Thailand eSIM it links to the TrueMove H 5G and DTAC 5G operator networks. The quality and reach of service depend on each operator’s infrastructure in the area you are visiting, so you can expect connectivity wherever those networks are present.
8 plans are available for Thailand, from $3.90 up to $69.90. Every plan is data only, delivered by QR code, and starts counting when you connect on arrival.
BangkokChiang MaiPhuketKrabiOne plan for all of Thailand, starting on first connection.
Good to know
Staying connected in Thailand: practical tips
Four simple steps to use CometSIM
From checking your phone to landing online — the whole thing takes about two minutes, and you do most of it before you fly.
Compatibility
Make sure your phone works with eSIM. It takes ten seconds — just dial a code and check.
Check compatibilityDestination
Choose your country and the data plan that fits your trip. Prices are in USD, no surprises.
See all destinationsInstall your eSIM
Scan the QR code we email you. Install it at home on Wi-Fi — ready in a couple of minutes.
Setup guideLand & connect
Switch it on when you arrive. Your data starts on arrival, and your own number stays exactly where it is.
You’re onlineAdd CometSIM VPN to your trip
Stay safe on hotel and airport Wi-Fi and reach home content. Your eSIM carries the data, the VPN protects it.
Questions people actually ask
If yours is not here, write to us — we answer within 24 hours.
Which operator(s) does the Thailand eSIM use and what does that mean for a traveller?
The eSIM works with TrueMove H 5G and DTAC 5G. That means your device will connect to whichever of these networks is available, giving you access to their data services while you are in Thailand.
Can the Thailand eSIM be used in a neighbouring country, such as Laos?
No, this is a single‑country plan that is valid only within Thailand. Regional plans are available if you need connectivity across multiple countries.
Which plan size suits a trip to Bangkok and Phuket?
As a rough guide, the 5 GB or 10 GB 30‑day plans usually cover the data needs of a two‑city visit, allowing for navigation, messaging, and occasional streaming.
Will I lose my own phone number?
No. Your physical SIM stays in the phone and keeps your number for calls and WhatsApp. The eSIM only carries data, so both work side by side.
When does my plan start counting down?
When the eSIM first connects to a network at your destination — not when you buy it. So you can install it days before you fly without losing any time.
Is my phone compatible?
Most phones from 2018 onwards are: iPhone XS and later, Google Pixel 3 and later, Samsung Galaxy S20 and later. Your phone also has to be carrier-unlocked. Dial *#06# — if an EID appears, you have eSIM. Full list on our Device Compatibility page.
How fast will I get my QR code?
Usually within a couple of minutes of payment, by email. If it has not arrived, check spam first, then write to us and we will resend it immediately.
Can I use hotspot or tethering?
Yes, on every plan we sell. Share the connection with a laptop, a tablet or the rest of your group.
What if I change my mind?
If you have not installed the eSIM, you get a full refund within 180 days. Once a profile is activated and data has been used it cannot be refunded — the allowance is consumed from the network. Full detail in our Refund Policy.
Do you sell plans for groups?
Yes. For Umrah and Hajj groups, student trips and tour operators we deliver the QR codes as a single batch before departure, at group rates. Email us with your group size and destination.