SIM cards in Chiang Mai

Tourist SIM vs eSIM in Chiang Mai — which is better?

For most visitors, a physical tourist SIM from an airport carrier booth is still the fastest solution. Setup takes under 10 minutes, includes instant activation, and gets you online before you reach the taxi queue. The downside: physical SIM swaps lock you to one number, which matters if you are doing banking authentication via SMS.

eSIMs through providers like Airalo solve the SIM-swap problem — you keep your home number active while running a local data line. The tradeoff is that eSIM plans in Thailand typically cost 20–40% more per GB than local physical SIMs, and you need to activate before arriving if your phone plan requires a data connection to download the profile.

For digital nomads staying longer than 30 days, a monthly local plan from AIS will significantly undercut tourist day-pass pricing. Registration requires your passport — every carrier inThailand is legally required to record foreign subscriber identity.

Common SIM mistakes in Chiang Mai

Three mistakes that cost foreigners time and money: buying a tourist plan when a monthly plan would be cheaper for a two-week stay; not checking whether tethering/hotspot is included before buying; and choosing based on download speed alone when upload speed matters more for video calls and file sharing.

The LandedGo app shows verified SIM plan data from community reports — including which plans actually deliver their advertised speeds in the neighbourhoods you are likely to be working from.

Where to buy

• Airport arrivals hall — fastest option, verified vendors, slightly higher prices.
• Official carrier stores in city malls — better plan selection, staff speak some English.
• Convenience stores — 7-Eleven, FamilyMart carry top-up cards but not SIM activation.

Prices (2026)