HelloRoam is a global eSIM provider offering instant mobile data in 175+ countries. Buy prepaid travel eSIM plans with no extra fees, no contracts, and instant activation on any eSIM-compatible device.
Get your Thailand eSIM and enjoy reliable internet anywhere.
Great value data plans, starting from $2.28. Reliable connection from top regional networks. Works with all eSIM-compatible mobiles.
Start your trip with an eSIM for Thailand and skip the sky-high charges abroad! Whether you're in bustling cities or quiet villages, stay connected with a travel eSIM.
Thailand
5GUp to 5G support
Data sharing available
No surprises: pay once, browse freely
eSIMs/Travellers
Total
Apple App Store
Install your eSIM before or during your trip. Your plan begins once you arrive at your destination and turn on your eSIM. User guide →
Secure payment guaranteed
Data plans available for Thailand
Valid for
Network: T-Mobile
Plans can change, and that's okay. With HelloRoam, you can request a refund for your eSIM within 180 days of purchase.
Learn moreSee how our pricing, coverage, and support compares.
Prices verified:
HelloRoam offers eSIM plans for Thailand starting from $3.52. Connect on 5G and 4G networks including AIS, TrueMove H, DTAC, and True Move. Brilliant for Bangkok city breaks and Thai island holidays from Ireland. 175+.
Pick a data plan for your destination and complete checkout.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates when you land.
Track usage, top up data, and manage all your eSIMs in one place.
Pick a data plan for your destination and complete checkout.
Scan the QR code to install your eSIM instantly.
Your eSIM installs instantly and activates when you land.
Track usage, top up data, and manage all your eSIMs in one place.
| Feature |  | Local provider | Limited data eSIM |
|---|---|---|---|
| 180-day refund policy |  |  | |
| 24/7 live chat support | |  | |
| €0 activation fees | | | |
| 99.8% uptime guarantee | | | |
| No data overage charges | | | |
| Instant QR code delivery | | | |
| Premium Thailand carrier networks | | | |
Need a hand? Our support team is available 24/7. Just send us a message and we'll get you sorted.
Simply download the app, install your eSIM, and pick a data plan. It activates straight away when you arrive.
Use your eSIM for data while keeping your main SIM active for calls and messages. Works alongside your Three, Vodafone, or Eir SIM.
If you have 3G/LTE and another mobile carrier in your area has better 4G/5G, we'll switch you over straight away.
Never get caught short. When you've used 80% of your data, we'll send you a notification.
Enjoy safe, stable internet on trusted local networks, optimised for speed and security.
Stay connected abroad with regional or global data plans wherever you travel.
Share your mobile internet using your eSIM with other devices easily and quickly.
Thailand is a brilliant long-haul destination for Irish travellers and the mobile coverage is genuinely impressive. AIS, TrueMove H, DTAC, and True Move provide strong 5G and 4G coverage across Bangkok, Chiang Mai, Phuket, Koh Samui, and all the main tourist hubs. Remote jungle areas, island boat crossings, and mountain trekking routes can have limited signal. A HelloRoam eSIM is far more convenient than buying a SIM at Suvarnabhumi Airport after a long flight from Dublin. 175+.
Thailand is outside the EU: no EU roaming
Thailand is well outside the EU and your Irish carrier's EU roaming does not apply. A HelloRoam eSIM from $3.52 is far more affordable than international roaming add-ons from Eir, Three IE, or Vodafone IE for a Thai holiday.
Activate at home before your long-haul flight
Thai holidays from Ireland typically involve a connecting flight through Dubai, Doha, or London. Set up your HelloRoam eSIM at home before you leave Dublin. Enable data when you land in Bangkok and you are connected immediately, no airport SIM queue needed after an exhausting journey.
Download offline maps for remote islands
Crossing to smaller Thai islands like Koh Tao, Koh Lipe, or Koh Chang often involves losing signal on the ferry. Download offline Google Maps tiles for each island before boarding the boat from the pier.
Bangkok transport apps need live data
Bangkok's BTS Skytrain and MRT metro, Grab ride-hailing, and food delivery apps like Grab Food all need a live data connection. Your HelloRoam eSIM keeps all these running from the moment you clear immigration at Suvarnabhumi.
Chiang Mai trekking and remote areas
Chiang Mai city has excellent coverage. Trekking into the hills north of the city towards the Myanmar border area can have very limited signal. Download your route maps offline before setting out on any multi-day jungle trek.
HelloRoam connects on AIS, TrueMove H, DTAC, and True Move in Thailand. AIS has the widest national coverage including in rural and northern areas. TrueMove H and DTAC are strong in Bangkok and tourist destinations. All four networks have 4G across the main tourist areas with 5G in Bangkok. Your eSIM picks the best available signal.
Your connectivity picture for a Thai holiday from Ireland. Thailand is outside the EU.
| Category | HelloRoam eSIMRecommended | Thai SIM card | Eir, Three IE, or Vodafone IE Thailand roaming |
|---|---|---|---|
| Typical cost | $3.52–$35.00 total | $8.00–$28.00 total | $10.00–$20.00/day |
| Details | Plans from $3.52. Buy before your long-haul flight, activate at home, and arrive in Bangkok already on local data. Much cheaper than Irish carrier international roaming. | Available at Suvarnabhumi Airport counters but requires setup after a long flight. Tourist SIM packages can also be more expensive than a pre-bought eSIM. | Thai roaming rates from Irish carriers can be $3 to $10 per day. A two-week Thai holiday at international roaming rates could easily cost $40 to $150 in data charges. |
Prices approximate as of April 2026. Actual savings vary.
Thailand's best season for Irish visitors is November to April when the weather is dry and warm across the country. May to October is monsoon season with heavy rain, especially on the west coast and Andaman islands. The Gulf of Thailand side (Koh Samui, Koh Phangan) has a different weather pattern and can be visited from July to October. New Year and Christmas in Thailand are very popular with Irish travellers.
HelloRoam connects travelers in Bangkok with reliable data across Thailand. No SIM card swap needed.
View plansAIS and TrueMove H offer 5G across Bangkok. Both Suvarnabhumi and Don Mueang airports have excellent indoor coverage.
Use HelloRoam in Phuket for instant connectivity. Our Thailand plans work on any eSIM phone.
View plansAIS and TrueMove H 5G cover Phuket well. Phuket Airport has strong coverage in all terminals.
Bang Kapi is a Bangkok district in the eastern suburbs, a busy residential and shopping area with good MRT access. HelloRoam keeps you connected across the city.
AIS 5G covers Bang Kapi. The MRT Yellow Line makes it easy to connect to the wider Bangkok network.
Chiang Mai is the cultural heart of northern Thailand, a city of ancient temples, elephant sanctuaries, night markets, and cool mountain air that feels like a world apart from Bangkok.
Chiang Mai's Sunday Walking Street and temple hopping are best navigated with HelloRoam data keeping Google Maps live.
HelloRoam delivers mobile data in Chon Buri, keeping you online throughout Thailand.
Chon Buri, including Pattaya, has AIS 5G. Laem Chabang port and the coastal strip get strong signal.
Hua Hin is Thailand's oldest royal beach resort, a relaxed alternative to Phuket with a night market and easy train access from Bangkok. HelloRoam keeps you connected here.
AIS and DTAC cover Hua Hin with 4G. Take the train from Bangkok Hua Lamphong for a scenic journey.
Arrive in Mueang Nonthaburi ready to connect. HelloRoam covers all of Thailand with fast data.
Nonthaburi near Bangkok has AIS and TrueMove H 5G. The MRT Purple Line maintains in-station connectivity.
Pattaya on the Gulf of Thailand has reinvented itself as a resort city for all types of travellers, with beaches, waterparks, golf courses, and a buzzing entertainment scene.
Pattaya's beach road and back streets are easy to explore with HelloRoam data for maps and restaurant reviews.
Explore Phra Nakhon without losing connection. HelloRoam offers fast data across Thailand.
Phra Nakhon in central Bangkok has dense AIS 5G. The Grand Palace and Khao San Road are fully covered.
Browse and stream in Samut Prakan with HelloRoam mobile data plans for Thailand.
Samut Prakan borders Bangkok and shares its dense 5G coverage. Suvarnabhumi Airport sits within this province.
Udon Thani is a major northeastern Thai city and transport hub, close to the Laos border and good for exploring Isan culture. HelloRoam keeps you connected here.
AIS and TrueMove H cover Udon Thani with 4G. Activate before landing at Udon Thani Airport.
Showing slide 1 of 11
Apple App Store
"Super easy to set up! Had data the moment I landed. Saved me so much hassle compared to getting a local SIM."
Sarah M.
"Used HelloRoam for my Europe trip. Worked perfectly in 5 different countries without any issues."
James K."Best travel eSIM I have used. Fast speeds, great coverage, and excellent customer support when I had questions."
"Finally a reliable travel data solution! No more hunting for WiFi or paying high carrier fees."
Emma L."Instant activation, great speeds, and the price was very reasonable. Will definitely use again!"
Michael R.
"My go-to for international travel now. Simple, affordable, and just works everywhere I go."
David T.An eSIM (embedded SIM) is a digital SIM card built into your mobile, tablet, or smartwatch. It lets you activate plans without inserting a physical SIM card. Unlike traditional SIMs, eSIMs are reprogrammable. You can switch carriers or plans instantly on devices like iPhone 14, Samsung Galaxy S23, or Google Pixel 8.
To check if your mobile supports eSIM, go to Settings, then Cellular (iPhone) or Settings, then Network & Internet (Android) and look for 'Add eSIM' or 'SIM card manager'. Most flagship mobiles released after 2018 support eSIM, including iPhone XS and newer, Samsung Galaxy S20+, Google Pixel 3+, and many modern Android devices. You can also dial *#06# to see if an EID (eSIM identifier) appears.
To install your HelloRoam eSIM, follow these 3 steps: (1) Purchase your plan from the HelloRoam dashboard and receive your QR code via email within minutes. (2) Open Settings, then Cellular, then Add eSIM on your device (iPhone) or Settings, then Network & Internet, then Mobile Network (Android). (3) Scan the QR code or enter the manual activation code to complete installation in 2 to 5 minutes. Make sure you're connected to Wi-Fi during setup.
eSIM activation is usually instant but can take 2 to 10 minutes depending on carrier conditions and signal strength. If activation takes longer than 10 minutes, try these steps: restart your device, toggle aeroplane mode on and off for 30 seconds, make sure the eSIM profile is set as your active data line, or check that you're in an area with good network coverage.
Yes, most modern mobiles support dual SIM. You can use one physical SIM and one eSIM at the same time. This is ideal for Irish travellers who want to keep their Three, Vodafone, or Eir number active for calls and texts while using a HelloRoam eSIM for affordable data abroad. You can choose which SIM handles calls, messages, and data in your device's cellular settings under 'Primary' or 'Default' line options.
5G support on HelloRoam eSIMs depends on the local carrier network included in your plan and your device's 5G compatibility. Many HelloRoam plans include 5G access where partner networks offer 5G coverage in major cities and urban areas. Your device must support 5G bands used in the Thailand (check device specifications), and you'll automatically connect to the fastest available network (5G, 4G LTE, or 3G) based on coverage availability.
You can check your HelloRoam eSIM data usage in two ways: (1) HelloRoam Dashboard: log into your account at helloroam.com to view real-time data usage, remaining balance, and plan expiry date. (2) Device Settings: on iPhone, go to Settings, then Cellular, then your eSIM line. On Android, go to Settings, then Network & Internet, then Mobile Network, then Data Usage. Dashboard data updates every 15 to 30 minutes, while device-level usage is tracked locally and may differ slightly.
Refund eligibility varies by plan. Generally, refunds are available if the eSIM has not been installed or activated. Contact support with your order ID for refund requests. Once approved, refunds typically process within 5 to 14 business days depending on your payment provider and bank processing times.
QR codes are typically single-use for security reasons. If you need to reinstall, use the reinstall option in your account or contact support for a new activation method.
Contact HelloRoam support through multiple channels: (1) Live chat available 24/7 on our website at helloroam.com/contact. (2) Email us at help@helloroam.com with your order ID for faster help (average response time under 2 hours). (3) Use the in-app Help section for instant answers. (4) Check our FAQ database. For urgent issues while travelling, live chat gives you the fastest resolution.
The best eSIM in Thailand depends on your needs, but HelloRoam's Thailand eSIM is a top choice for travellers. It partners with major networks like Three Ireland, Vodafone Ireland, and Eir. According to ComReg's 2025 coverage report, these carriers cover over 99% of the Irish population with 4G LTE, and 5G is expanding across Dublin, Cork, and Galway. HelloRoam connects you to the strongest available network automatically. Travellers in Dublin, Cork, and Limerick can expect 5G speeds between 150 and 300 Mbps, while rural areas maintain strong 4G for maps, streaming, and calls.
Yes, you can easily purchase and activate an eSIM for Thailand before you travel or when you arrive. HelloRoam offers instant digital delivery, so there's no need to visit a shop or wait for shipping. Simply buy your eSIM online, scan the QR code sent via email, and connect to a 4G/5G network within minutes. The eSIM works with all major Thailand carriers, giving you coverage across the country. It's ideal for tourists, business travellers, and remote workers who want reliable connectivity without expensive charges or physical SIM card swaps.
Japan eSIMStarting from $3.68
Türkiye eSIMStarting from $1.80
China eSIMStarting from $3.52
United Arab Emirates eSIMStarting from $6.40
Saudi Arabia eSIMStarting from $7.40
India eSIMStarting from $5.66
Vietnam eSIMStarting from $4.92
Indonesia eSIMStarting from $3.60
Afghanistan eSIMStarting from $13.80
Armenia eSIMStarting from $3.42Manage your eSIMs wherever you are, whenever you need.
