Travel Guide
SIM Card & eSIM in Thailand
Staying connected in Thailand is easy and affordable. You have two main options: buy a physical SIM card at the airport or a 7-Eleven, or activate an eSIM before you even board your flight. This guide covers both options, the three major networks, and exactly how to get set up.
Comparison
eSIM vs Physical SIM: Which Should You Choose?
| Feature | eSIM | Physical SIM |
|---|---|---|
| Setup time | 5 minutes from your phone | 15-30 minutes at airport counter |
| Availability | Buy online before departure | Airport counters, 7-Eleven, phone shops |
| Phone compatibility | iPhone XR+ / Pixel 3+ / Samsung S20+ | Any unlocked phone |
| Keep home number | Yes — use both SIMs simultaneously | No — must swap SIMs or use dual-SIM phone |
| Price (8-day plan) | 300-600 THB ($9-17) | 299-599 THB ($9-17) |
| Top-up options | App or online | 7-Eleven, app, or USSD codes |
| Thai phone number | Sometimes (depends on provider) | Always included |
| Best for | Short trips, tech-savvy travelers | Longer stays, need Thai number for apps |
Networks
Thailand's 3 Mobile Networks
AIS
44%Coverage: Best overall coverage, especially in rural areas and islands
Speed: 4G/5G — fastest average speeds in speed tests
Tourist plan: Traveller SIM: 15GB / 8 days for 299 THB, 30GB / 15 days for 599 THB
Best choice for most travelers. Strongest signal on islands and in the north.
TrueMove H
33%Coverage: Excellent in cities and tourist areas, slightly weaker in remote areas
Speed: 4G/5G — merged with dtac in 2023, network still integrating
Tourist plan: Tourist SIM: 15GB / 8 days for 299 THB, unlimited data / 10 days for 599 THB
Great value with unlimited data options. Good if staying in major tourist areas.
dtac (now True Corp)
23%Coverage: Good in urban areas, weakest in rural Thailand
Speed: 4G/5G — sharing TrueMove network after merger
Tourist plan: Happy Tourist SIM: 15GB / 8 days for 299 THB, 30GB / 15 days for 499 THB
Budget option. Fine for cities but consider AIS if heading off the beaten path.
Plans
Best Tourist Plans Compared
| Carrier | Plan | Data | Validity | Price |
|---|---|---|---|---|
| AIS | Traveller SIM | 15 GB | 8 days | 299 THB ($9) |
| AIS | Traveller SIM Plus | 30 GB | 15 days | 599 THB ($17) |
| TrueMove | Tourist SIM | 15 GB | 8 days | 299 THB ($9) |
| TrueMove | Tourist Unlimited | Unlimited (5G) | 10 days | 599 THB ($17) |
| dtac | Happy Tourist | 15 GB | 8 days | 299 THB ($9) |
| dtac | Happy Tourist Max | 30 GB | 15 days | 499 THB ($14) |
At the Airport
Buying a SIM Card at the Airport
Suvarnabhumi (BKK)
Location: Arrivals hall, Level 2 — counters for AIS, TrueMove, and dtac right after customs
Hours: 24/7 (all three carriers)
Process: Show your passport, choose a plan, staff will install and activate the SIM. Takes 10-15 minutes.
Tip: Counters are right after you exit customs. Prices are the same as downtown — no airport markup. Staff speak English.
Don Mueang (DMK)
Location: Arrivals hall, after customs — AIS and TrueMove counters on the left
Hours: 6:00 AM - midnight (some close earlier)
Process: Same as BKK. Passport required. Staff handle setup.
Tip: If you arrive late at night, grab a SIM at any 7-Eleven on the way to your hotel instead.
Phuket (HKT)
Location: Arrivals hall — AIS counter near exit, TrueMove counter nearby
Hours: Aligned with flight schedules, typically 7:00 AM - 11:00 PM
Process: Standard setup with passport. Slightly smaller selection than Bangkok airports.
Tip: Lines can be long during peak season (December-February). Consider buying an eSIM before your flight to skip the queue.
Chiang Mai (CNX)
Location: Small counters in arrivals area
Hours: Varies — not 24/7
Process: Standard passport + SIM setup
Tip: Limited stock during busy periods. The 7-Eleven on Nimmanhaemin Road is a reliable backup.
Convenience
Buying a SIM Card at 7-Eleven
There are over 13,000 7-Eleven stores in Thailand — you're never far from one. Every store sells AIS and TrueMove SIM cards.
- 1Ask for a 'tourist SIM' — staff know what you mean
- 2Show your passport (required by Thai law since 2015)
- 3Choose your plan (staff can explain options in basic English)
- 4Staff will install the SIM and activate it — wait for the confirmation SMS
- 5Save the SIM packaging — it has your phone number and top-up instructions
If the 7-Eleven staff seems unsure, try a dedicated phone shop or the next 7-Eleven. Not all staff are trained on SIM activations.
Step by Step
How to Set Up an eSIM for Thailand
Check phone compatibility
Your phone must support eSIM. Compatible: iPhone XR and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer. Check Settings → Cellular/Mobile → Add eSIM to confirm.
Choose a provider
Popular eSIM providers for Thailand: Airalo, Holafly, Nomad eSIM, and the carriers' own apps (AIS eSIM, TrueMove eSIM). Airalo is the most popular with travelers.
Purchase and download
Buy your eSIM plan online or through the provider's app. You'll receive a QR code via email. Download while connected to WiFi — you need internet to activate.
Scan the QR code
Go to Settings → Cellular → Add eSIM → Scan QR Code. Label it 'Thailand' for easy identification. Don't activate it yet if you're not in Thailand.
Activate on arrival
Once in Thailand, go to Settings → Cellular and enable your Thailand eSIM as the primary data line. Turn off data roaming on your home SIM to avoid charges.
Test your connection
Open a browser and check your connection. You should see 4G/5G in the status bar. If not, restart your phone. Most eSIMs activate within 5 minutes.
Pro Tips
Good to Know
Register your SIM
Thai law requires SIM registration with a passport. Airport and 7-Eleven staff handle this automatically. Unregistered SIMs get deactivated after a few days.
Top up before it expires
Tourist SIMs expire after their validity period. Top up through the carrier's app, at 7-Eleven, or by dialing *123# (AIS) or *123# (TrueMove) before expiry to keep your number active.
WiFi is everywhere
Most hotels, cafes, and restaurants have free WiFi. If you're mainly in tourist areas, a smaller data plan might be enough.
Need a Thai number for apps?
Some Thai apps (Grab, Food Panda, Line) work better with a Thai phone number. If you're using an eSIM that doesn't include a number, consider getting a cheap physical SIM too.
Long-stay visitors
For stays over 30 days, get a monthly postpaid plan. AIS and TrueMove offer unlimited data plans from 599-899 THB/month with passport registration at any branch.
Common Questions
Frequently Asked Questions
What is the best SIM card for tourists in Thailand?▼
Can I use eSIM in Thailand?▼
How much does a Thai SIM card cost?▼
Do I need my passport to buy a SIM card in Thailand?▼
Is 5G available in Thailand?▼
Should I get a SIM card or just use WiFi in Thailand?▼
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