# SIM cards, eSIMs & internet in Chiang Mai

> Staying connected in Chiang Mai is fast and cheap. SIM vs eSIM, the three networks, where to buy, the passport rule, and home wifi for longer stays.

One of the quiet reasons Chiang Mai works so well for [digital nomads](/blog/digital-nomad-chiang-mai) is how absurdly easy and cheap it is to get online. Thai mobile data is fast, reliable and costs a fraction of what you'd pay back home. Here's how to sort your connection — from the moment you land to settling in for months.

## The three networks

Thailand has three big operators — **AIS**, **TrueMove H** and **dtac** — all with nationwide 4G and growing 5G. For day-to-day use in the city (maps, calls, streaming, video meetings), any of them is fine. The one tip worth knowing: in the **north**, **AIS** generally has the widest coverage and fastest speeds, which matters if you'll head into the mountains or smaller towns. For a city-based stay, pick whichever is convenient.

![SIM cards, eSIMs & internet in Chiang Mai](/blog/sim-card-internet-chiang-mai/visual.webp)

## Tourist SIM vs local SIM

Two broad choices:

- **Tourist SIMs** — sold to visitors in **8 / 15 / 30-day** packages, loaded with lots of data (often 30–100 GB or "unlimited" with fair use). Roughly **299–1,199 THB** depending on length. Easy, instant, set up for you at the airport.
- **Local prepaid SIMs** — the same networks, not branded "tourist." You buy a cheap starter SIM and add monthly data bundles. For stays of a month or more, these are **better value** per GB.

The smart move for many: a tourist SIM or eSIM to start, then switch to a local monthly plan once you've settled.

## eSIM: land already connected

If your phone is recent (most newer iPhones, Pixels and Galaxies), an **eSIM** lets you arrive online — no shop hunting after a long flight. Install a plan by QR code before you fly (global providers like Airalo, or the Thai operators' own eSIMs).

The big perk: you can run the **eSIM alongside your home SIM**, keeping your home number live for banking codes while using cheap Thai data. The catches: some third-party eSIMs are **data-only** (no Thai phone number), and they can cost a little more than a local physical SIM at high data volumes.

## Where to buy & the passport rule

- **Airport counters** — most convenient; staff activate and test it before you leave. Slightly pricier, but the markup is small.
- **Operator shops in malls** (Maya, Central Festival) — best for a specific cheaper local plan; staff speak enough English.
- **7-Eleven** — starter SIMs and top-ups on nearly every street.

One legal must-know: **all Thai SIMs require ID registration**, so bring your **passport** — the vendor scans it to activate the SIM. Topping up later is quick: the operator app, any 7-Eleven, or a top-up machine.

![SIM cards, eSIMs & internet in Chiang Mai](/blog/sim-card-internet-chiang-mai/visual-2.webp)

## Home wifi, cafés & coworking

For longer stays, mobile data is only half the picture:

- **Home fibre** — many condos and long-stay rentals include broadband, often **50–100 Mbps**; fibre is cheap by Western standards. Our house keeps guests well covered.
- **Cafés & coworking** — Chiang Mai's café scene is famously laptop-friendly, and coworking spaces advertise 50–100 Mbps. Most cafés have free wifi (fine for light work). Start with our [coffee guide around Nimman](/blog/coffee-around-nimman).
- **Backup** — even with great wifi, keep mobile data on hand for calls and time-sensitive work; many people just hotspot from their phone.

## Our simple recommendation

1. **Check your phone is unlocked** before you travel, or no Thai SIM/eSIM will work.
2. **Arrive connected** with an eSIM, or grab a tourist SIM at the airport.
3. **Going long?** Switch to a local monthly plan once you're settled.
4. **Match data to your work** — heavy video-callers should just buy a big or "unlimited" plan; it's cheap enough not to think about.

Prices and bundles change often, so treat the numbers here as ballparks and check current deals in-store. Beyond that, getting online here is genuinely a non-event — and with the connection sorted, the rest of [nomad life in Chiang Mai](/blog/digital-nomad-chiang-mai) falls into place. Any trouble? Just ask us at the house.