Country guide · AsiaLocal SIM Cards in Thailand: Carriers, Plans & Prices (2026)
Tourist SIM cards in Thailand start at $8 from AIS. Buy at Airport arrivals at Suvarnabhumi or Don Mueang. Counters from all 3 carriers are right past customs.. Passport required for registration. For instant data without a store visit, a HelloRoam eSIM costs from $1.4 and activates in 2 minutes. See the comparison table below.
- Recommended
- HelloRoam eSIMfrom $1.4, instant activation
- Setup time
- Under 2 mininstall before your flight
- Physical SIM from
- $8 USDAIS
- Network
- 4G LTE / 5GAIS
Thailand makes getting connected as easy as buying a bottle of water. Three national carriers, AIS, TrueMove H, and True (which absorbed DTAC), compete aggressively on tourist plans. All three have counters directly past customs at Suvarnabhumi Airport and Don Mueang Airport. Every 7-Eleven in the country, and there are roughly 14,000 of them, sells SIM cards from at least two carriers. AIS edges out TrueMove H for nationwide rural coverage, particularly in the northern mountains around Chiang Rai and the southern peninsula. Passport registration is required by law and takes about five minutes. Staff at airport counters handle everything including SIM insertion and plan activation. Tourist plans start at 299 THB, include unlimited local calls, and come with data allowances ranging from 15 to 50 GB.
Thailand has three carriers: AIS (largest, best coverage), True (formerly DTAC, merged), and TrueMove H. AIS is the recommended choice for travelers heading outside Bangkok. Suvarnabhumi Airport (BKK) and Don Mueang (DMK) both have AIS, True, and TrueMove counters in arrivals. No passport copy or registration required beyond showing your passport.
eSIM for Thailand: the fastest option
Travel eSIMs skip the physical SIM process entirely. Buy online, scan a QR code, and your phone connects to a local network. No passport check, no airport queue, no SIM ejector tool. Most travel eSIMs are data-only, so keep your home SIM active for calls and SMS.
Local AIS tourist SIM at Suvarnabhumi is very affordable and includes voice calls. eSIM makes sense for short 3-5 day trips or travelers who want to arrive connected without standing in the airport queue.
HelloRoam Thailand eSIM: our tested pick
HelloRoam scored 8.8/10 in our testing and connects to AIS in Thailand, delivering 31/31 activation success. Activates before you board, so you land in Bangkok already connected.
Affiliate link. Commissions never affect our rankings or editorial findings.
| Provider | Data | Validity | Price |
|---|---|---|---|
| HelloRoamOur pick | 1 GB | 7 days | $1.4 |
| Airalo | 3 GB | 30 days | $9 |
| Holafly | Unlimited | 7 days | $19 |
eSIM provider comparison
| Provider | Price | Data | Validity | Activation | Score |
|---|---|---|---|---|---|
| HelloRoamTop rated | $1.4 | 1 GB | 7 days | Instant | 8.8/10 |
| Airalo | $9 | 3 GB | 30 days | Instant | 8.8/10 |
| Holafly | $19 | Unlimited | 7 days | Instant | 8.6/10 |
Scores based on activation speed, network coverage, support response time, and pricing across 14 countries. HelloRoam (8.8/10, 31/31 activations) is the top-rated provider. All provider links marked as affiliate.
See full eSIM guide for Thailand →
eSIM vs physical SIM card in Thailand
Here is how a HelloRoam eSIM compares to buying a local SIM card in Thailand across the factors that matter most to travelers.
| Feature | HelloRoam eSIM | Local SIM Card |
|---|---|---|
| Setup time | Under 2 minutes | 15-60 minutes |
| Available before travel | Yes, install up to 30 days early | No, buy on arrival |
| ID required | No | Yes, passport |
| Price from | $1.4 USD | $8 USD |
| Data included | 1 GB to unlimited | Varies by plan |
| Hotspot | Included | Included on most plans |
| Support | 24/7 English | Local language, business hours |
| Local phone number | No, data only | Yes, included |
| Voice calls | Data only, use WhatsApp/FaceTime | Included |
Best SIM cards for tourists in Thailand
Thailand has 3 providers offering tourist-friendly prepaid SIM cards. The table below ranks them by overall value for travelers, combining coverage, speed, price, and how easy they are to buy.
| Provider | Type | Network | Cheapest plan | Plans | Where to buy |
|---|---|---|---|---|---|
| AISTop pick | major | 4G LTE / 5G | 299 THB / $8 | 3 | Airport, Convenience Store |
| True (formerly DTAC) | major | 4G LTE / 5G | 299 THB / $8 | 2 | Airport, Convenience Store |
| TrueMove H | major | 4G LTE / 5G | 299 THB / $8 | 2 | Airport, Convenience Store |
SIM card plans compared
Below are every available tourist plan across all providers in Thailand, sorted by price. Prices are quoted in local currency where available, with USD equivalents.
AIS
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist SIM 15GBBest value | 15 GB | 299 THB | 8 days | 100 min local | 20 SMS |
| Tourist SIM 30GB | 30 GB | 599 THB | 15 days | Unlimited local | 50 SMS |
| Tourist SIM Unlimited | Unlimited | 899 THB | 30 days | Unlimited local | Unlimited |
True (formerly DTAC)
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Happy Tourist 15GBBest value | 15 GB | 299 THB | 8 days | 100 min local | 20 SMS |
| Happy Tourist 30GB | 30 GB | 599 THB | 15 days | Unlimited local | 50 SMS |
TrueMove H
| Plan | Data | Price | Validity | Calls | SMS |
|---|---|---|---|---|---|
| Tourist SIM 15GBBest value | 15 GB | 299 THB | 8 days | 100 min local | 20 SMS |
| Tourist SIM 50GB | 50 GB | 699 THB | 15 days | Unlimited local | 50 SMS |
Where to buy a SIM card in Thailand
The best place to buy is Airport arrivals at Suvarnabhumi or Don Mueang. Counters from all 3 carriers are right past customs.. Here is what each channel offers and what to expect.
Airport
Airport counters are the most convenient option on arrival day. Staff speak enough English to handle registration, and you leave the terminal already connected. Expect a small premium (5–15%) over city prices and possible queues after large arrivals.
Convenience Store
Convenience stores stock prepaid SIM cards near the checkout. Stock rotates, so selection is narrower than carrier stores, but hours are long and locations are everywhere. Bring your passport.
Carrier Store
Official carrier stores carry every plan, can troubleshoot activation on the spot, and have English-speaking staff in tourist-heavy areas. Prices match the carrier website.
Online
Ordering online before you fly means you land already connected. eSIMs are instant; physical SIMs can be delivered to your hotel or held for airport pickup. Best prices overall.
Buying experience
Walking out of customs at Suvarnabhumi, the AIS, TrueMove H, and True counters are the first things you see on the left. Each has a queue but it moves fast. The staff member scans your passport with a handheld device, selects your plan, inserts the SIM, and confirms your data is active before you leave. The whole process takes under five minutes. At 7-Eleven stores in Bangkok, the SIM cards are behind the counter. You point to the plan poster, show your passport, and they register it on a tablet. The passport scan is mandatory. Skip the vendors outside the airport who quote lower prices without registration. Unregistered SIMs get deactivated within days.
Coverage & network in Thailand
Thailand operates on 4G LTE / 5G networks. Coverage quality varies by provider and region.
Coverage Map for Thailand
Visit each carrier's website for their interactive coverage map
AIS
major carrier
Urban
Strong
Rural
Strong
True (formerly DTAC)
major carrier
Urban
Strong
Rural
Moderate
TrueMove H
major carrier
Urban
Strong
Rural
Strong
AIS leads on overall coverage with a rating of 5/5 for reach and 5/5 for speed. In cities, all providers perform similarly. Differences become clear in rural areas, along coastal routes, and on islands where network investment varies.
Real-world connectivity
Bangkok, Chiang Mai, Phuket, and Pattaya all get strong 4G LTE with consistent 30-80 Mbps speeds. Koh Samui, Koh Phangan, and Koh Phi Phi have good coverage in tourist areas but speed drops near the beaches on quieter coasts. Koh Tao has reasonable AIS coverage in Mae Haad but weaker signal on the east side of the island. The north, including Chiang Rai and Mae Hong Son province, has AIS as the clear leader. Remote hill tribe villages and jungle trekking routes above 800 meters elevation will have weak or no signal from any carrier.
Our verdict on SIM cards in Thailand
Best for: Bangkok city visitors, Beach travelers in Phuket and Koh Samui, Backpackers on multi-week trips.
Local AIS tourist SIMs cost $8-17 for 15-30 GB with voice calls, making Thailand one of the best-value countries for mobile data. eSIM costs $8-12 for less data and no voice. For stays over 5 days, the local SIM is clearly better value. For 3-5 day trips or late-night arrivals, eSIM saves the counter visit.
Activation & registration
Check your phone is unlocked
Your device must be carrier-unlocked to accept a Thailand SIM. Check Settings or contact your home carrier before you leave.
Choose a plan before you buy
Decide on data volume and validity period. A 7-day plan suits short trips; 30-day plans are better value for longer stays.
Bring your passport
Registration is mandatory. The vendor scans your passport ID page and enters details into a government portal. Keep your passport accessible.
Insert and configure
Insert the nano-SIM using the ejector tool. Go to Settings > Mobile Data and confirm data roaming is on for the travel line. Run a speed test to confirm you are connected.
Tips for travelers in Thailand
Get your SIM at the airport. Every major carrier has a booth right outside customs at Suvarnabhumi.
All carriers require passport registration at the point of sale. The staff handle everything for you.
AIS and TrueMove H have the widest 5G coverage. True (formerly DTAC) is solid for 4G in tourist areas.
Top up at any 7-Eleven using the carrier app or by purchasing a top-up card at the counter.
Coverage on islands (Koh Samui, Phuket, Koh Phangan) is generally good with all three carriers.
Common mistakes to avoid
Buying from touts outside the airport at inflated prices. Go directly to carrier counters inside arrivals.
Not bringing your passport. It is legally required to register a Thai SIM card.
Choosing a data-only plan when you need to make local calls for hotel bookings or taxis.
Frequently asked questions
Which carrier has the best coverage in Thailand?
AIS and TrueMove H share the top spot with the widest coverage across mainland Thailand and islands. For rural areas and northern hill country, AIS has a slight edge.
Can I buy a SIM card at 7-Eleven in Thailand?
Yes, most 7-Eleven stores sell prepaid SIM cards from AIS, True, and TrueMove H. You will need your passport, and the staff can help with activation.
How much does a tourist SIM card cost in Thailand?
Tourist SIM cards start at around 299 THB (roughly $8 USD) for 15 GB over 8 days. Plans with more data and longer validity range from 599-899 THB ($17-25 USD).
Do I need to register my SIM card in Thailand?
Yes, Thailand requires biometric registration (passport scan and sometimes a photo) for all SIM card purchases. This is done at the point of sale and takes about 5 minutes.
Will my phone work with Thai SIM cards?
Most unlocked phones from the last 5 years work in Thailand. The country uses 4G bands 1, 3, 7, 8, and 28. Check that your phone is unlocked and supports at least Band 3 (1800 MHz) for broad compatibility.
Which eSIM provider is best for Thailand?
HelloRoam is our top-rated eSIM for Thailand (8.8/10). It connects to AIS and activates in under 2 minutes with no passport required. Airalo and Holafly also offer Thailand coverage.
Is it safe to buy a SIM card at Bangkok airport?
Yes. The AIS, TrueMove H, and True counters at Suvarnabhumi and Don Mueang airports are official carrier booths staffed by uniformed employees. You need your passport for registration. Avoid vendors outside the terminal who sell unregistered SIMs at inflated prices.
Do I need a VPN in Thailand?
No VPN is needed for standard use. Social media apps like Facebook, Instagram, YouTube, and WhatsApp all work without restriction. Thailand blocks some gambling and politically sensitive websites, but these do not affect typical tourist browsing.
Which eSIM is best for Thailand?
HelloRoam connects to Thailand's 4G LTE / 5G network and plans start at $1.4 for 1 GB over 7 days. It works well for travelers who want data active before landing. Airalo offers a wider range of plan sizes at competitive prices. Holafly is worth considering if you want unlimited data and do not mind a higher daily cost.
Should I buy a SIM card or eSIM for Thailand?
Local AIS tourist SIM at Suvarnabhumi is very affordable and includes voice calls. eSIM makes sense for short 3-5 day trips or travelers who want to arrive connected without standing in the airport queue. A local SIM from AIS starts at $8 and requires passport registration. Choose eSIM if your phone supports it and you value convenience. Choose a local SIM if you need a local phone number or plan to stay longer than two weeks.
Helpful guides
- eSIM vs Local SIM: Which to Choose
- eSIM Setup Guide (iPhone and Android)
- SIM Registration Requirements
- eSIM Guide for Asia
SIM card guides for nearby countries
Traveling beyond Thailand? These guides cover nearby destinations.
