Quick Answer
SIM Card & eSIM Guide for Thailand
Stay connected from the moment you land — the right SIM makes everything easier.
Getting a local Thai SIM card or activating an eSIM before (or just after) you land is one of the most impactful small decisions you'll make. With local data, you can use Grab for taxis, Google Maps for navigation, translate menus, access accommodation confirmations, and stay in touch — all for the cost of a couple of coffees.
Thailand has three main networks — AIS, TrueMove H, and DTAC (now merging with True) — plus several MVNOs. Tourist SIM packages are widely available at airports, 7-Elevens, and network shops, typically costing 299–499 THB for 15–30 days of data.
Where to Buy a SIM Card
Airport arrivals: The easiest option. AIS, TrueMove, and DTAC all have counters at Suvarnabhumi, Don Mueang, Phuket, Chiang Mai, and Krabi airports. Typically slightly more expensive than in-city prices. 7-Eleven and Family Mart: Basic tourist SIMs available nationwide, 299–399 THB. Network stores: Best prices and most options. AIS (orange shops), TrueMove (blue), DTAC (blue-green) found in all shopping malls. Bring your passport — registration is required by law.
Best Tourist SIM Plans
AIS Traveler SIM: 299 THB for 8 days (30GB), 399 THB for 15 days (50GB), 499 THB for 30 days (100GB). Good coverage nationwide including islands. TrueMove Tourist SIM: Similar pricing to AIS with slightly better coverage in some rural areas. DTAC Tourist SIM: Often slightly cheaper, now merging with TrueMove. Recommended: AIS for city and island coverage, TrueMove for rural/northern areas. All tourist SIMs include some international calling minutes. Data is throttled after the high-speed allowance but remains usable.
eSIM Options
eSIMs are perfect for travelers who don't want to swap physical SIMs or have dual SIM phones. You can activate before you arrive, meaning you have data the moment your plane lands. Providers: Airalo (popular aggregator), Holafly, Simify, and direct from AIS and TrueMove. Prices are comparable to physical SIMs. Your phone must support eSIM (most phones since 2019 do). Check your carrier's unlock status before trying to activate an eSIM. The process takes 5–10 minutes and is done entirely through the provider's app.
Data Usage Tips
100GB is more than enough for a 30-day trip for typical usage (maps, messaging, browsing, occasional video). If you're streaming heavily or using as a hotspot, consider the unlimited plan (usually 100–200 THB more). Download offline maps (Maps.me or Google Maps offline) for areas with weak signal. WhatsApp and Line work well for calls and messaging throughout Thailand — cheaper than using calling credit. Keep roaming OFF on your home SIM to avoid accidental charges.
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