Thailand is one of the best-value eSIM destinations in the world. Excellent 4G coverage, fast speeds, and plans that cost a fraction of what you'd pay for European or American data.
Networks in Thailand
AIS, DTAC (now True Move), and True Move H are the main operators. AIS has the widest coverage including islands and rural areas. True Move H offers strong urban 5G. All three provide solid performance in Bangkok, Chiang Mai, Phuket, and Koh Samui.
What You'll Pay
Thailand eSIM data is among the cheapest globally — typically $0.50–$1.50 per GB. A 10GB, 15-day plan usually costs $6–$10. Unlimited daily plans are available for ~$2–$3/day.
Coverage Across Thailand
- Bangkok: Excellent 4G/5G everywhere
- Chiang Mai: Strong coverage in city; patchy in mountain areas
- Phuket & islands: Good coverage on main tourist areas; weaker on smaller islands
- Northern rural areas: AIS provides the most consistent coverage
Travel Tips
- Activate your eSIM at home — Thailand's airport Wi-Fi can be congested
- Download maps offline for island hopping where coverage drops
- Grab, the ride-hailing app, is essential in Bangkok and works great with your eSIM data
Browse Thailand eSIM plans on SIMPal.