eSIM for Chiang Mai

Chiang Mai: what to know before you go

Arriving

The airport (CNX) is just beside the old city. Plenty of people come up from Bangkok instead, on the sleeper train or a short flight.

Working remotely

You are never far from a café or coworking space, and video calls are part of daily life for many. When the wifi gives out, an eSIM hotspot keeps you going.

Into the hills

Expect dead spots on Doi Inthanon, Doi Suthep and the roads out toward Pai. Save maps offline before setting off by bike or car.

Riding a scooter

Renting a scooter is common. Look closely at the insurance, and mount the phone rather than holding it on the road.

How much data you need

A week of navigation and photos is about 3 GB. Stay a month and work with calls, and you can need 20 GB or more.

Written 23 October 2026. Opening rules, fees and prices at attractions change, so check the official site before you rely on them.

Thailand eSIM in 2026: plans, prices and networks

Prices run from $3.49 (1 GB, 7 days) up to $51.99 (50 GB, 30 days) across 10 plans. Operators: DTAC 5G and TrueMove H 5G.

Operators

DTAC 5G, TrueMove H 5G

Adding data

Top up the same eSIM from its page

Days start counting

When the eSIM first connects at your destination

Install before

The date is on your order. After it, an eSIM that was never installed expires

Your phone number

Unchanged, every plan is data only

Personal hotspot

Allowed, it draws on your plan data at no extra cost

Speed after the daily allowance

Day passes drop to 512 Kbps

Last confirmed November 1, 2026

Questions about Chiang Mai

Can I rely on the eSIM for remote work?

It handles messages, email and calls fine. If your day is wall to wall video calls, pick a bigger plan or add a top up, and read the hotspot rules for your plan.

What is the cheapest Chiang Mai eSIM plan?

Chiang Mai uses the Thailand plans, because an eSIM belongs to a country and not to a city. $3.49 gets you 1 GB for 7 days. Data sizes range from 1 GB to 50 GB across 10 plans, and there are unlimited day passes too.

Which mobile networks does the Chiang Mai eSIM connect to?

You get DTAC and TrueMove H, on 5G wherever it is available. The operators are listed on every plan, so you can check before you buy.

Is there an unlimited data plan for Thailand?

Yes, the day passes. Each day starts with a full speed allowance, and after it you stay online at a reduced speed of 512 Kbps.

Will my phone number still work?

Yes. Every plan is data only, so your regular line stays active for calls and texts, and WhatsApp carries on as usual.

Should I buy a local SIM card in Chiang Mai?

There is no need. An eSIM is a digital SIM card that you install from a QR code before the trip, so you skip the airport kiosk and never open the SIM tray.

How does it compare with roaming in Chiang Mai?

The eSIM is prepaid, so you know the full cost before you go and no charges appear later. Roaming is billed afterwards by your own carrier at its own rates, usually per day or per megabyte. Leave data roaming off on your regular line so it cannot bill you.

When is the best time to install the eSIM?

At home, on Wi-Fi, before you leave. Once you arrive, pick the Fizztrip line for mobile data and switch data roaming on for that line.

When does the plan start counting days?

At the first connection at your destination. Buying the eSIM or installing it does not start the clock, so a 30 day plan runs for 30 days from the moment it first joins a network there.

Can I buy the eSIM weeks before my trip?

Yes. Validity only starts at the first connection at your destination, so buying or installing early does not use up any days. Install it before the "Install by" date on your order.

Is there a deadline to install the eSIM?

Yes. Your order and the site show an "Install by" date, and an eSIM that is still not installed after that date expires. Buying early is fine: just install it on Wi-Fi before then.

What happens when my data runs out?

The connection pauses and nothing extra is charged, since every plan is prepaid. Top up from the eSIM page and you are back online on the same eSIM, with nothing to reinstall. On a day pass you get a full speed allowance each day. Once it is used, you stay connected at a lower speed (512 Kbps) until the next day begins.

Can I add data later?

Yes, straight from the eSIM page. The extra data goes onto the eSIM you already have, so there is nothing new to install.

Can I share data with a hotspot?

Yes. Hotspot traffic uses the same plan data and Fizztrip adds no fee for it. Keep in mind that a laptop burns through data much faster than a phone, so for remote work a day pass or a larger plan is the safer pick.