Bangkok eSIM — Stay Online in Bangkok & Across Thailand
Bangkok eSIM — Stay Online in Bangkok & Across Thailand
Landing in Bangkok? Your Bangkok eSIM gets you online the moment you arrive at Suvarnabhumi or Don Mueang — and it works across the whole of Thailand. No plastic SIM, no roaming shock: scan a QR code and connect.
Why a Bangkok eSIM?
- Online at the airport — grab a taxi, load maps and message home the second you land.
- Covers all of Thailand — the same plan works in Bangkok, Phuket, Chiang Mai and the islands.
- Keep your number — data-only, so your home SIM stays in for calls and codes.
Perfect for exploring Bangkok
From the Grand Palace and temples to the floating markets, street food and rooftop bars, you'll want maps, translation and ride apps at your fingertips. Bangkok has strong 4G/5G coverage across the city.
How much data do you need?
For maps, messaging and social sharing, 3–5GB covers a typical trip. Island-hopping for a couple of weeks or streaming a lot? Size up — you can add another plan anytime.
Set up before you fly
Install at home over Wi‑Fi and switch it on when you land. See our setup guide — about five minutes.
FAQ
Does it only work in Bangkok?
No — a Bangkok eSIM covers the whole of Thailand, including the islands.
Will my phone work?
Most phones from 2019 onward support eSIM. Check the compatibility list.
- 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
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
What is an eSIM?
A SIM card built into your phone. Instead of pushing a plastic chip into a tray, you scan a QR code and the plan installs itself in about a minute.
Your physical SIM stays exactly where it is, so you keep your own number for calls and WhatsApp. The eSIM just carries the data.
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.
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.