How to Get a Phone and SIM Card in Thailand: Complete 2025 Guide for Tourists and Expats
Whether you’re soaking up the street food in Bangkok, exploring the islands of Phuket, or settling in Chiang Mai as an expat, staying connected in Thailand is essential. From navigating via Google Maps to making mobile payments and staying in touch with friends, having a local SIM card or Thai phone number can make all the difference.
Thanks to Thailand’s world-class mobile network infrastructure, it’s easy for both tourists and long-term residents to get connected quickly. With a range of affordable data plans, 24/7 airport kiosks, and a growing eSIM market, getting online is a seamless part of arriving in the Land of Smiles.
Major Mobile Network Providers in Thailand
Thailand’s telecom market is dominated by three major players, all offering extensive 4G LTE and growing 5G coverage across the country.
| Provider | Coverage Strength | Key Features |
|---|---|---|
| AIS | Excellent rural and urban | Widest coverage, fast speeds, great reliability |
| TrueMove H | Best in 5G rollout | Urban stronghold, extensive 5G nationwide |
| DTAC | Popular with expats | Affordable plans, good in cities and resorts |
As per the National Broadcasting and Telecommunications Commission (NBTC), 5G coverage is rapidly expanding in Bangkok, Chiang Mai, Pattaya, and major provinces in 2025. AIS currently leads in rural service, while TrueMove H has the most aggressive 5G infrastructure.
Where and How to Buy a SIM Card in Thailand
Suvarnabhumi Airport: Convenience on Arrival
At Suvarnabhumi International Airport (BKK) and Don Mueang Airport (DMK), you’ll find official SIM card booths from AIS, TrueMove H, and DTAC operating 24/7 near baggage claim and arrivals. Plans are tourist-friendly and include setup assistance.
City Center and Malls: Better Prices
For a wider selection and better value, visit official mobile stores in malls such as MBK Center, Terminal 21, or CentralWorld. Staff often speak English and offer personalized plan suggestions.
7-Eleven and FamilyMart: Budget-Friendly
While you can buy SIM cards at Thailand’s ubiquitous convenience stores, be aware that staff may not be able to register or activate the SIM. These are best for top-ups or secondary SIMs.
Online and eSIM: Hassle-Free Connectivity
Digital-savvy travelers can now purchase eSIMs before arrival. Platforms like Thailand eSIM and Airalo allow for instant data access the moment you land no physical SIM required.
SIM Card Registration Requirements and Process
Thailand has strict SIM registration laws under the NBTC regulations.
What You Need:
- A valid passport (mandatory for tourists)
- SIM must be registered at the point of purchase
Where You Can Register:
- Mobile operator stores (AIS, TrueMove H, DTAC)
- Supermarkets: Big C, Tesco Lotus
- Some 7-Eleven locations with biometric registration
Be sure to confirm registration by receiving an SMS from the carrier. Unregistered SIMs can be suspended without warning.
Choosing the Right SIM Card and Data Plan
Thailand offers a wide range of prepaid plans for short- and long-term stays, as well as postpaid options for residents with Thai IDs or work permits.
Tourist SIM Cards (Prepaid):
| Provider | Plan Name | Data + Calls | Price (THB) | Validity |
|---|---|---|---|---|
| AIS | Traveller SIM | 50GB 5G data + 100 THB call credit | 299–699 | 8–15 days |
| TrueMove H | Tourist Inter SIM | Unlimited data (10Mbps) + local calls | 599 | 8 days |
| DTAC | Happy Tourist SIM | 15GB + 100 mins local calls | 299 | 7 days |
Long-Term Plans:
- Postpaid: From 299 THB/month, unlimited 5G plans for 999+ THB
- Prepaid top-ups: Buy data packages via mobile apps or convenience stores
See Phonetravelwiz’s Thailand SIM guide for current pricing and comparisons.
Buying a Phone in Thailand: New vs Used Options
If your phone isn’t unlocked or eSIM-compatible, you might need to buy one locally. Thailand has a well-developed retail ecosystem for both new and second-hand phones.
Where to Buy:
- Authorized brand stores: Apple, Samsung, Huawei in major malls
- Tech malls: MBK Center (Bangkok) for bargains and variety
- Online marketplaces: Lazada, Shopee, JD Central
| Option | Price Range (THB) | Pros | Cons |
|---|---|---|---|
| New Phones | 3,000–50,000+ | Warranty, latest models | More expensive due to taxes |
| Used Phones | 1,000–15,000 | Affordable, large selection | No warranty, condition varies |
There are no phone contracts in Thailand; all purchases require full upfront payment. Always request an IMEI check to avoid blacklisted or stolen devices.
Setting Up and Using Your Phone and SIM in Thailand
SIM Activation
SIMs bought at official booths are usually activated on the spot. If not:
- Dial the activation code (provided on the SIM pack)
- Restart your phone
- Configure APN settings (usually automatic; if not, check your provider’s site)
Network Access
- Urban areas have excellent 4G and 5G service
- Rural areas may rely on 3G or 4G depending on the provider
- DTAC may lag slightly in remote zones compared to AIS
Mobile Payments and Digital Wallets:
Thailand is a leader in mobile fintech adoption:
- TrueMoney Wallet: widely used at 7-Eleven, street vendors, and online
- Rabbit LINE Pay: popular with BTS Skytrain, restaurants, and e-commerce
Read more on Thailand’s digital payment ecosystem via the ADB.
Topping Up:
- Via top-up cards (available everywhere)
- Bank apps and mobile wallets
- Provider apps like myAIS, True iService, and DTAC app
Practical Tips for Tourists and Expats
| Tip | Details |
|---|---|
| Where to Buy SIMs | Airport booths (convenience), malls (price + service), online (eSIM) |
| Avoiding Scams | Only buy from official stores or partners |
| Verify SIM Registration | Ask staff to confirm your passport is correctly linked |
| Customer Support | AIS: 1175 |
| Safety | Use dual SIM phones or carry a SIM ejector tool when switching cards |
Be cautious of counterfeit SIM cards or second-hand phones sold without proper documentation. Only purchase from authorized or well-reviewed sellers.
Conclusion
Getting a phone and SIM card in Thailand in 2025 is straightforward, affordable, and incredibly beneficial. With world-class network coverage, fast mobile data, and an expanding digital payment ecosystem, your phone will be your best travel companion.
Whether you opt for a prepaid tourist SIM at the airport, order an eSIM online, or sign up for a long-term plan, choosing the right option depends on your length of stay and connectivity needs.
For the latest offers and mobile internet deals, visit Thailand eSIM Guide or TrueMove H Official Site.
