HelloRoam sells prepaid eSIM data plans for Thailand starting at £2.60. Your eSIM connects to local 5G networks the moment you land. Activate by QR code in under two minutes. Keep your EE, Vodafone or Three number on dual SIM while your eSIM handles data.
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Your sim for Thailand plan with local network coverage
Cheap eSIM for Thailand, starting from £2.60. Local 5G data on local partner networks in Thailand. Works on any carrier-unlocked, eSIM-compatible phone. An e SIM Thailand from HelloRoam starts at £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G networks. A Thailand sim from HelloRoam starts at £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G networks covering Bangkok, Chiang Mai, Phuket, Koh Samui, and Krabi. Activate by QR before Suvarnabhumi Airport and skip every SIM counter. A sim for Thailand from HelloRoam means instant QR delivery, no contract, and local network speeds from the moment you land.
Thailand eSIM with 5G coverage
HelloRoam provides eSIM plans for Thailand starting from £2.60. Connect on 5G and 4G networks via AIS, TrueMove H, and dtac across Bangkok, Chiang Mai, Phuket, Koh Samui, and the Thai islands. Activate via QR code before your flight.
- Plans start at £2.60 with 5G speeds
- Coverage from AIS and 3+ other operators
- Instant activation in under 2 minutes
- 180-day refund on unactivated eSIMs
- Thailand coverage across major cities
- Network
- 5G
- Plans From
- £2.60
- Activation
- Under 2 min
- Refund
- 180 days if unactivated
How to Set Up an eSIM in Thailand
Follow these steps to get your eSIM sorted on iPhone or Android before your holiday. Works for any eSIM for international travel, no replacement SIM, no shop visit.
Set up an eSIM on your iPhone for travel from the UK
Set up an eSIM on your Android for travel from the UK
- 1
Choose your plan and checkout online
Choose a data plan for your destination and complete your purchase in GBP.
2Scan the QR code
Scan the QR code to install your eSIM straight away.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates when you land.
4Manage it all from our mobile app
Track usage, top up data, and manage all your eSIMs in one place.
Holiday changed? Not to worry, your money is safe.
Plans change, and that's fine. With HelloRoam, an eSIM that was never activated (not installed or scanned) qualifies for a full refund within 180 days of purchase.
Learn more about our refund policyHelloRoam Thailand eSIM vs a travel SIM card or EE, Vodafone and Three roaming
Comparing an eSIM with a travel SIM card for Thailand? The eSIM skips the airport SIM kiosk. EE and Vodafone add a daily fee for roaming on many plans, and Three's Go Roam comes with a data limit. HelloRoam sells a prepaid eSIM for Thailand from £2.60, with a 180-day refund on unactivated eSIMs.
Thailand SIM card vs HelloRoam eSIM: which is better for British visitors?
A SIM card for Thailand from Suvarnabhumi arrivals costs £5-12 and means a queue at the counter. HelloRoam delivers local data by QR before you board at Heathrow, with plans from £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G networks.
A data sim card Thailand from HelloRoam arrives by QR before you board. Plans cover Bangkok, Chiang Mai, Phuket, and the southern islands with no SIM swap at any crossing.
A tourist sim card Thailand from HelloRoam starts from £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G and has you connected from Suvarnabhumi arrivals. No counter, no contract, no roaming bill.
You can buy sim card for Thailand in GBP without leaving home. HelloRoam activates before your Heathrow flight and your data works from the moment you land at Suvarnabhumi.
A prepaid SIM card Thailand from HelloRoam activates in two minutes and has you connected from Suvarnabhumi arrivals. Plans start from £2.60 with a 180-day money-back guarantee on unactivated eSIMs.
A Thailand travel sim from HelloRoam covers Bangkok, Chiang Mai, Phuket, and the southern islands on one plan with no SIM swap at any border. No contract, no counter, and instant QR delivery to your inbox.
Why UK Travellers Pick HelloRoam e-sim for Thailand
Round-the-clock live chat support
Need help at 2am in Tokyo or midnight in Paris? HelloRoam support is available 24/7. Message us by live chat, WhatsApp or email at help@helloroam.com. Mobile data problems don't wait for office hours, and neither do we.
Best eSIM for Thailand
Get data at 5G speeds the moment you land in Thailand. Skip roaming fees from your UK network, such as EE or Vodafone. HelloRoam connects you to local carrier networks in minutes, whether you are travelling or working. You are online before you clear customs.
Dual SIM ready
Keep your UK mobile number active for calls and texts on your main SIM. HelloRoam runs travel data on a second eSIM line on any dual SIM compatible phone. No need to choose between your EE or Vodafone line and your holiday data. Your wireless connectivity abroad stays separate from your home plan, so there are no bill surprises when you return.
212+ carrier networks including Thailand
HelloRoam eSIM connects to 212+ carrier networks across 185+ countries. Your phone joins a partner 5G network in Thailand automatically, with no manual carrier selection needed. Speeds depend on the local network and where you are.
Data alerts before you run out
HelloRoam emails you as your data runs low on a fixed plan, so you can top up or buy a new plan in time. Where your plan allows it, top up from the app before the plan expires, without reinstalling your eSIM or visiting a shop. Adding a fresh prepaid data package takes under a minute from your account dashboard.
Local network speeds in Thailand
HelloRoam eSIM connects to local 5G networks in Thailand for one prepaid HelloRoam price. Use it for navigation, video calls and streaming, without paying EE or Vodafone daily roaming rates. Speeds depend on the local network and where you are.
Global and regional plans
Visiting more than one country? HelloRoam regional eSIMs cover many countries across Europe, Asia, the Americas and more in a single purchase. Unlimited data plans work for longer holidays. One QR code, no border hassle. A single regional plan gives you mobile data and wireless connectivity across multiple countries without ever swapping a physical SIM card.
Hotspot and data sharing in Thailand
Share your Thailand eSIM data with a laptop or tablet using your phone's mobile hotspot. No extra charges and no separate setup needed. Works on all eSIM compatible phones with data sharing enabled. It is a practical way to keep a travel companion or work device running on the same prepaid data package at no added cost.
eSIM Prices for Thailand
HelloRoam, the best eSIM Thailand. Compare plans from 1 to 30 days and pick the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | £2.77 |
| 3 days | £7.88 |
| 7 days | £17.04 |
| 15 days | £33.20 |
| 22 days | £45.04 |
| 30 days | £56.44 |
HelloRoam vs Other eSIM Providers for Thailand
See how HelloRoam compares with Airalo, Holafly, Nomad, Saily and Ubigi for Thailand. The table covers a 180-day refund on unactivated eSIMs, data overage charges and instant QR code delivery.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund (unactivated eSIMs) |  Feature available |  Feature not available |  Feature available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
What Is an e SIM? How eSIM Works in Thailand
An eSIM card is a digital SIM built into your phone. There is no plastic chip and no SIM tray to open. Scan a QR code to activate your e SIM in under two minutes on any eSIM compatible iPhone or Android. It works as a prepaid international data plan for Thailand travel with no airport SIM shop queue, no replacement SIM card, and no carrier contract. Mobile data through an eSIM connects to local in-country networks, giving you the same wireless connectivity as a resident rather than a roaming tourist. Follow the step-by-step setup guide to get connected before your flight from Heathrow, Gatwick, or any UK airport. guide
Mobile connectivity guide for Thailand
Thailand has strong 5G and 4G LTE coverage across Bangkok, Chiang Mai, Phuket, Koh Samui, and all major tourist destinations. AIS, TrueMove H, and dtac cover the capital's districts, the Chao Phraya riverside, Pattaya, Hua Hin, and the Andaman Coast islands.
Remote jungle trekking areas in northern Thailand and smaller Andaman Sea islands can have weaker signal. A HelloRoam eSIM has you connected the moment you land at Suvarnabhumi or Phuket International Airport.
- HelloRoam connects to AIS 5G, DTAC 5G, TrueMove H 5G and 1 more in Thailand
- 5G and 4G LTE in Bangkok, Chiang Mai, Phuket, and major tourist islands
- Connect on AIS, TrueMove H, and dtac networks
- Activate via QR code before your long-haul flight from the UK
eSIM Travel Tips for Thailand
Install your eSIM before your long-haul flight
Set up your HelloRoam eSIM at home before your flight from Heathrow, Gatwick, or Manchester. Enable mobile data when you land at Suvarnabhumi or Phuket and you will be connected immediately. No airport SIM card queue, no hunting for a phone shop in the arrivals hall.
Currency and mobile payments in Thailand
Thailand uses the Thai baht (THB), and the pound-to-baht rate moves around, so check it before you exchange cash. Cash remains widely used in markets, street food stalls, and smaller guesthouses. Keep your HelloRoam eSIM active to use banking apps, check live exchange rates, and locate nearby ATMs throughout your trip.
Coverage on Thai islands
Major tourist islands, Koh Samui, Koh Phangan, Koh Tao, Koh Lanta, and the Phi Phi Islands, have reasonable 4G in main resort areas. Very small or less developed islands may have signal only in the main village. Download offline maps of island ferry routes and key locations before heading out.
Jungle trekking and national parks
Doi Inthanon National Park and jungle trekking areas around Chiang Mai can have limited signal away from main visitor centres. Khao Yai National Park has reasonable coverage near the entrance. Download your trekking routes and emergency contacts before entering remote jungle areas.
Keep your UK SIM active for banking
UK banks frequently send SMS verification codes. Keep your British SIM active in your second SIM slot whilst using HelloRoam for Thai data. You stay reachable on your regular UK number for bank security checks throughout a long holiday.
Mobile networks in Thailand: what British travellers need to know
Thailand has two major network groups: AIS and True Corporation, which runs the TrueMove H and dtac brands following their 2023 merger. HelloRoam connects on AIS, TrueMove H, and dtac. 5G has been live on AIS and True since 2020 and covers Bangkok and the main tourist centres, with 4G across the islands and much of the countryside. Your eSIM connects automatically to AIS, TrueMove H or dtac, depending on where you are.
- AIS
- 5G
- DTAC
- 5G
- TrueMove H
- 5G
- True Move
- 4G
HelloRoam eSIM vs UK carrier roaming charges in Thailand
A clear comparison of mobile data options for your Thai holiday.
| Category | HelloRoam eSIM Recommended | Thai SIM card | Standard roaming (EE, Vodafone UK, Three) |
|---|---|---|---|
| Typical cost | From £2.60 total | £5.97–£20.88 total | £6–£8/day |
| Details | Plans start at £2.60. Buy before your long-haul flight, install via QR code at home, and land in Bangkok or Phuket already connected. No expensive daily roaming charges from your UK network. | Thai SIM cards are available at airports and 7-Eleven stores. They are inexpensive and easy to get but require physical SIM-swapping. Tourist SIMs typically last 8 to 30 days. | UK networks treat Thailand as a rest-of-world destination, well outside standard European roaming. That usually means paying extra for a daily or monthly roaming pass. On a month-long backpacking trip, daily charges add up fast on your monthly bill. |
Prices approximate as of . Actual savings vary.
Best time to visit Thailand from the UK
Thailand's peak season for British visitors is November to April when the weather is dry, sunny, and cooler at 26°C to 32°C. Bangkok and Chiang Mai are most comfortable from November to February. The Andaman Coast (Phuket, Krabi, Koh Lanta) is ideal from November to April. The Gulf Coast (Koh Samui, Koh Phangan) has a slightly different monsoon pattern, best from December to September. Summer months (June to October) bring the southwest monsoon with heavy rain but fewer crowds and lower prices.
Reviewed by the HelloRoam Editorial Team
Reviewed by the HelloRoam Editorial Team
Top Destinations in Thailand
Bangkok
HelloRoam connects travelers in Bangkok with reliable data across Thailand. No SIM card swap needed.
AIS and TrueMove H offer 5G across Bangkok. Both Suvarnabhumi and Don Mueang airports have excellent indoor coverage.
Phuket
Use HelloRoam in Phuket for instant connectivity. Our Thailand plans work on any eSIM phone.
AIS and TrueMove H 5G cover Phuket well. Phuket Airport has strong coverage in all terminals.
Bang Kapi
Bang Kapi is a residential district in eastern Bangkok, home to the massive Seacon Square mall and The Mall Bang Kapi. HelloRoam keeps you connected in the Thai capital.
AIS and TrueMove H cover Bang Kapi with 5G. The Bang Kapi area is accessible via the Ramkhamhaeng Bus Rapid Transit line.
Chiang Mai
Chiang Mai is northern Thailand's cultural heart, surrounded by mountains, ancient temples, and rich hill tribe traditions. HelloRoam keeps you connected throughout the region.
AIS provides strong 4G in the old city. Download offline maps for highland areas.
Chon Buri
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
Hua Hin is Thailand's oldest beach resort, a royal seaside town south of Bangkok with wide sandy beaches and a relaxed atmosphere. HelloRoam keeps you online.
AIS and TrueMove H cover Hua Hin with 4G. Train service from Bangkok Hua Lamphong takes about four hours.
Mueang Nonthaburi
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
Pattaya is a lively coastal resort on the Gulf of Thailand, offering beaches, water parks, and a thriving entertainment scene. HelloRoam keeps you connected.
DTAC and AIS run solid 4G on the beach. Activate before leaving Bangkok for Pattaya.
Phra Nakhon
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.
Samut Prakan
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
Udon Thani is a major city in northeast Thailand, a gateway to the prehistoric rock art of Ban Chiang and close to the Laos border. HelloRoam keeps you connected in the Isaan region.
AIS and DTAC cover Udon Thani with 4G. Activate before landing at Udon Thani Airport.
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Reviews
HelloRoam eSIM Reviews from UK Travellers
Real reviews from Trustpilot and the App Store, quoted as written.
40k+ travellers have used HelloRoam
Cat
On a trip to Europe, my hotel Wi-Fi was so slow and outside Wi-Fi was unreliable. I couldn’t take it anymore so I got helloroam for a few days. It was tricky to set up correctly because of the primary settings (with my original number). But I reached out to their customer service via WhatsApp. Super responsive and helpful, with specific and clear steps to troubleshoot. Appreciate having 4G roaming instead of being stuck with in and out Wi-Fi during my trip!!
Rated 5 out of 5 by this reviewer
Very good experience! The eSIM was easy to set up and worked great in London. It was much cheaper than it would have been to use my own operator there.
Ilona
Rated 5 out of 5 by this reviewer
metulker
Hard to set up but help was good
Rated 5 out of 5 by this reviewer
Reuben
Really happy with HelloRoam. Everything worked as expected, from messaging and Google Maps through to streaming without any issues. Easy to use, reliable and affordable. Would happily use them again when travelling.
Rated 5 out of 5 by this reviewer
Angeline
Reliable connection. Reasonable pricing.
Rated 4 out of 5 by this reviewer
Last updated
Common Questions About Thailand eSIM
How much does the best SIM card for Thailand cost for British visitors?
An e-sim Thailand from HelloRoam starts at £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G networks. Activate by QR code before your Heathrow flight and walk out of Suvarnabhumi Airport already connected. HelloRoam backs every plan with a 180-day money-back guarantee on unactivated eSIMs.
Which Thailand SIM plan covers Bangkok, mainland cities, and the southern islands?
A Thailand tourist sim from HelloRoam activates by QR code before your flight, giving instant local data on AIS, DTAC, TrueMove H, and 1 more 5G networks from £2.60. Activate your e SIM Thailand before you board at Heathrow and land already sorted. No contract or SIM swap on any plan.
Does a Thailand eSIM work on the islands including Koh Samui and Koh Lanta?
A HelloRoam best SIM card for Thailand eSIM plan connects to AIS, DTAC, TrueMove H, and 1 more 5G networks across Bangkok, Phuket, Koh Samui, Koh Lanta, and main island ferry routes from £2.60. Very remote dive sites and uninhabited Similan Islands have limited coverage. Download offline maps before island-hopping by speedboat between southern Andaman islands.
How does a Thailand eSIM compare to buying a DTAC or AIS SIM at Suvarnabhumi?
DTAC and AIS counters at Suvarnabhumi and Don Mueang sell tourist SIMs requiring passport registration and setup time after a long-haul flight. A HelloRoam Thailand SIM plan activates by QR at home for £2.60 on AIS, DTAC, TrueMove H, and 1 more 5G networks. Land already sorted and go straight to your Skytrain transfer.
What is the best eSIM for Thailand?
A HelloRoam eSIM connects British travellers in Thailand on AIS, TrueMove H, and dtac, with 5G and 4G LTE across Bangkok, Phuket, Chiang Mai, and the islands. You can get a refund within 180 days if you never activate it. Plans start from £2.60. Install via QR code and arrive already connected.
Does a HelloRoam eSIM work in Thailand?
Yes, HelloRoam eSIM plans work throughout Thailand on the AIS, TrueMove H, and dtac networks. Coverage is strong across all major tourist areas, cities, and popular islands.
Which networks does HelloRoam use in Thailand?
HelloRoam uses AIS, TrueMove H, and dtac in Thailand, the brands of the country's two big network groups, AIS and True Corporation. All offer 5G in Bangkok and 4G LTE across tourist regions, covering attractions, airports, and city centres. Your phone selects the strongest available signal automatically, so you stay connected without manual network switching.
How do I activate an eSIM for Thailand?
Buy your plan on helloroam.com, scan the QR code under Settings, then Mobile Data, then Add eSIM. Do this at home on Wi-Fi before your long-haul flight; setup takes about five minutes. When you land in Thailand, enable mobile data and the plan activates immediately on AIS or TrueMove H.
How much does a HelloRoam eSIM for Thailand cost?
HelloRoam eSIM plans for Thailand start at £2.60, with the price depending on data size and duration. Larger plans suit longer backpacking trips, island-hopping holidays, or travellers who lean on data for maps, booking apps, and regular video calls home. A HelloRoam plan costs far less than UK carrier roaming for a typical Thai trip, with no hidden fees or surprise charges on your home bill.
Does HelloRoam work on Thai islands?
Yes, HelloRoam works on major Thai islands including Koh Samui, Koh Phangan, Koh Tao, Koh Lanta, and the Phi Phi Islands. Coverage is strongest in resort areas and main beaches. Very remote or uninhabited islands will have no signal.
Is a HelloRoam eSIM cheaper than EE roaming in Thailand?
Yes. Thailand is outside the EU and EE charges daily international roaming fees. A HelloRoam eSIM from £2.60 is significantly cheaper than accumulated daily UK carrier charges for a two or three week holiday in Thailand.
Does HelloRoam eSIM include calls and texts in Thailand?
HelloRoam plans are data-only. Use WhatsApp, Line (the everyday app in Thailand), or FaceTime for calls and messages over your data connection. Keep your UK SIM active in your dual SIM phone to receive calls from home on your British number. Emergency calls work on any available network even without an active data plan.
How much data do I need for two weeks in Thailand?
Two weeks in Thailand using maps, the Grab taxi app, WhatsApp, and social media typically uses 5 to 10 GB. If you work remotely, stream video, or make daily video calls home, choose a 10 to 15 GB plan. The HelloRoam app shows how much data you have used. The figure can be up to 3 hours behind.
Does HelloRoam work in Chiang Mai and northern Thailand?
Yes, Chiang Mai city and the surrounding area has good 4G and 5G coverage on AIS, TrueMove H, and DTAC. Remote jungle trekking trails, Doi Inthanon summit, and hill tribe village areas in the far north may have limited signal.
Does HelloRoam work in Bangkok's Sukhumvit and Silom districts?
Yes, HelloRoam works throughout Bangkok on AIS, TrueMove H, and DTAC with excellent 5G coverage in Sukhumvit, Silom, Khao San Road, and Chatuchak. The BTS Skytrain and MRT underground both have good signal.
What to Know Before You Buy
eSIM requires an unlocked, eSIM-compatible device. Check your phone settings before purchasing.
Most travel eSIM plans provide data only. Your existing phone number stays active for calls and texts on your primary SIM.
Coverage quality varies by location within Thailand. Urban areas typically have strong 5G coverage, while rural or remote areas may have limited connectivity.
Install your eSIM before departure. Activation requires an internet connection, which may not be available at your destination airport.
Transparency Notice
- Service Provider Name (SPN)
- HelloRoam appears as the carrier name on your phone's status bar through the SPN, a standardized field in the eSIM profile. Unlike most travel eSIM resellers, HelloRoam provisions its own Service Provider Name.
- Public Network Name (PNN)
- The PNN is the network name field in your eSIM profile, defined in 3GPP TS 31.102 (EF_PNN). Your phone can read it to display the name of the network you are connected to.
- Access Point Name (APN)
- HelloRoam eSIMs auto-configure their Access Point Name during installation. Your device connects to a local partner network without manual settings.
Prices are our retail rates across 185+ countries. The recommended plan is picked by data size and price. Every purchase includes a 180-day refund window if the eSIM has not been activated.
Future Syncs Limited 124 City Road, London, EC1V 2NX, UK +44 203 916 6249 help@helloroam.com Reg. No. 15950168
