Thailand eSIM brief
Thailand's mobile market is effectively a duopoly between AIS and True, both with strong city and island coverage, and a travel eSIM spares you the new in-person passport-and-biometric registration that now applies to local SIMs. Bangkok has near-saturation 5G; beaches and ferries mostly run on solid 4G. A good fit for island-hoppers who want maps, Grab and chat apps live without queuing at an airport counter.
$0.33 cheapest plan
$0.86 best $/GB
18 providers
50 plans live
Top 5 by value
| Plan | Data · days | Price | $/GB |
|---|---|---|---|
| Yesim · SEA | 0.49 GB · 1d | $0.42 BEST PICK | $0.86 |
| Yesim · Thailand | 0.49 GB · 1d | $0.42 | $0.86 |
| Roamix · Thailand 500MB 1Days | 0.49 GB · 1d | $0.45 | $0.92 |
| Roamix · Thailand 500MB 7Days | 0.49 GB · 7d | $0.45 | $0.92 |
| Roamix · Thailand 500MB 5Days | 0.49 GB · 5d | $0.45 | $0.92 |
Three things to know
- Thai networks cover the major islands well; remote beaches and ferry crossings can drop to 4G or weaker, where AIS-based coverage tends to hold up best.
- Local SIMs now require in-person passport and biometric registration — travel eSIMs are roaming-based and skip that entirely.
- Thailand is outside the EU roaming zone, so a 'Europe' regional plan won't work; choose a Thailand or Asia-regional eSIM.
- Many 'unlimited' Thailand plans give a daily high-speed allowance (often a few GB) then throttle — fine for maps and chat, worth checking if you stream or hotspot.