Quick Answer
Buy AIS at the airport — best overall coverage, fastest 5G rollout, most consistent speeds. DTAC and True (now merged into DTAC-True) are alternatives. For eSIM before arrival, Airalo works well. Monthly unlimited plans run THB 299–599/month ($8.30–16.60).
The Networks
AIS — Thailand's largest network by subscribers. Best overall coverage, strongest 5G rollout, reliable in all major cities (Bangkok, Chiang Mai, Phuket, Pattaya). Slightly more expensive than competitors but the reliability premium is worth it for remote work.
DTAC-True (now merged) — The two operators merged in 2023 creating Thailand's second major network. Competitive pricing, good urban coverage. Slightly less consistent than AIS in rural areas.
CAT/NT — Government-owned, primarily serves rural areas. Not relevant for most nomads.
Best Plans for Remote Workers
AIS
| Plan | Data | Validity | Price |
|---|---|---|---|
| Unlimited 5G (30-day) | Unlimited (throttled after 30GB) | 30 days | THB 299 (~$8.30) |
| Unlimited 5G+ | Unlimited (throttled after 50GB) | 30 days | THB 449 (~$12.50) |
| Annual unlimited | Unlimited 5G+ | 365 days | THB 2,299 (~$63.90) |
The annual plan at THB 2,299 is remarkable value for those staying in Thailand long-term — roughly $5.30/month.
DTAC-True
| Plan | Data | Price |
|---|---|---|
| Unlimited (throttled after 20GB) | Unlimited | THB 259/month (~$7.20) |
| Unlimited (throttled after 40GB) | Unlimited | THB 399/month (~$11.10) |
Getting a SIM at Suvarnabhumi or Don Mueang
Both Bangkok airports have AIS, DTAC-True, and True counters in the arrivals hall. Passport only required. Process takes 5–10 minutes. Active immediately. Cash (THB) or card accepted.
Alternatively, 7-Eleven convenience stores across Thailand sell prepaid SIMs from all operators — useful if you missed the airport counter.
eSIM Options
Airalo Thailand eSIMs: 3GB/30 days ~$8.50, 10GB/30 days ~$16, 20GB/30 days ~$24. Good for pre-arrival data or backup. Data-only, no Thai number.
Hotspot and Tethering
All Thai operator unlimited plans allow hotspot tethering. Your phone's data allowance applies to connected devices. For heavy laptop use (video calls, large file transfers), the 50GB full-speed AIS plan is more appropriate than the 30GB throttled option.
VPN in Thailand
Thailand has some internet restrictions (primarily political content and some gambling/adult sites). NordVPN is useful for full internet access and public WiFi security in coworking spaces and cafes.
Bottom Line
AIS unlimited plan (50GB at THB 449/month) for regular use. Annual AIS plan if you are staying 3+ months. Airalo eSIM as pre-arrival bridge.
Next steps: Thailand LTR Visa | Wise in Southeast Asia
*Last updated: May 2026*