Does eSIM work in Thailand? Yes — and extremely well. ConnectivityHuB plans connect to AIS and TrueMove H, Thailand's two largest networks. Here's what to expect city by city.
Coverage by city and region
All ConnectivityHuB Thailand plans automatically connect to the strongest available network between AIS and TrueMove H. Here's what to expect across Thailand's main destinations:
Bangkok
Excellent 4G/LTE throughout; 5G in CBD, Sukhumvit, BTS corridors
Excellent
Phuket
4G island-wide; 5G in Phuket Town and Patong
Excellent
Chiang Mai
Strong 4G throughout the city; 5G in city centre
Excellent
Krabi / Ao Nang
Solid 4G in town and main beaches
Good
Koh Samui
4G in Chaweng, Lamai and Nathon; weaker on north coast
Good
Koh Phangan
4G in Thong Sala and Hat Rin; variable in hills
Fair
Koh Phi Phi
4G in the main village; limited on quieter beaches
Fair
Rural / national parks
4G on major roads; 3G or no signal in remote areas
Variable
5G in Thailand
Thailand's 5G rollout is ahead of many European countries. AIS launched commercial 5G in 2020; TrueMove H followed in 2021. Both networks are rapidly expanding coverage across the country.
If your phone is 5G-capable, you'll get 5G speeds automatically in central Bangkok (Silom, Sathorn, Sukhumvit), Phuket Town and Chiang Mai city centre — no settings change needed. Your phone will switch seamlessly between 5G and 4G as you move.
What to expect outside major cities
Rural areas, national parks (Doi Inthanon, Khao Yai, Erawan) and remote hilltribe villages typically have 3G or inconsistent 4G coverage. Mobile signal can also be variable on less-developed islands and in mountain valleys.
For any trekking, hiking or off-the-beaten-path travel, we recommend:
Download Google Maps offline tiles for your area before you leave the city
Save important addresses, trail maps and emergency contacts offline
Don't rely on data for navigation in remote areas — carry a downloaded map
Ready to connect?
Get your Thailand eSIM. Install before you fly — it activates the moment you land.
Yes. eSIM works very well across Thailand. ConnectivityHuB plans connect to AIS and TrueMove H — the two largest mobile networks — covering Bangkok, Phuket, Chiang Mai, Krabi, and most tourist areas with reliable 4G LTE.
Which mobile networks does ConnectivityHuB use in Thailand?
Your eSIM connects to AIS and TrueMove H (formerly True Move), both of which operate nationwide 4G LTE networks and growing 5G coverage in major cities.
Is there 5G in Thailand?
Yes. AIS and TrueMove H both operate 5G networks in Bangkok (city centre and BTS corridor), Phuket Town, and Chiang Mai city centre. 5G coverage is expanding rapidly.
Does eSIM work on Thai islands?
Yes, with some variation. Koh Samui, Koh Phangan, and Koh Lanta have good 4G in main resort and town areas. Smaller or less-developed islands may have weaker signal, particularly on beaches away from settlements.