Note that iPhone devices from Mainland China aren’t eSIM compatible. Also iPhone devices from Hong Kong and Macao aren’t compatible (except for iPhone 13 Mini, iPhone 12 Mini, iPhone SE 2020 and iPhone XS)
Staying connected in Thailand is incredibly easy as long as you know the best way to buy a SIM card or eSIM. This comprehensive guide explains where to buy, how much it costs, data plans, what documents you need, and which option is best for backpackers, digital nomads, business travelers and vacationers.
Quick Overview
- You need your passport to register any physical Thai SIM card.
- The main mobile networks are AIS, DTAC and TrueMove H.
- Tourist SIMs cost 299 to 1,599 THB depending on duration and data.
- eSIMs can be purchased online and activated instantly.
- Best for short trips: eSIM or 8 to 15 day tourist SIM.
- Best for long stays: local monthly plans from the big operators.
Where to Buy a SIM Card in Thailand
1. Airport SIM Counters
Perfect for travelers who want to be connected immediately.
Pros
- Easiest and fastest option
- Staff set up everything for you
- English-speaking support
- No need to find a store later
Cons
- Slightly more expensive than in the city
- Possible queues during peak hours
Typical price: 299 to 1,199 THB
Validity: 8 to 30 days
Includes: high-speed 4G and 5G data, often unlimited with a fair-use limit
2. Convenience Stores (7-Eleven, FamilyMart)
Great for budget travelers or those who missed the airport counters.
Pros
- Available everywhere with thousands of stores
- Cheap prepaid starter packs
Cons
- Staff may only sell the pack and send you elsewhere for registration
- Occasional language barriers
- Activation may take longer
Tip: Bring your passport because registration is required.
3. Official Telecom Shops
Found in malls, tourist areas and major streets.
Pros
- Best support and troubleshooting
- Can issue both physical SIMs and eSIMs
- Good for long-term plans or monthly top-ups
Cons
- Can be busy in large malls
- Slightly more formal process
This is the best option for digital nomads who need dependable support or those staying more than a month.
4. Online eSIM (Instant Activation)
The fastest and most convenient method for most travelers.
Pros
- Activate before you land
- No physical SIM swap
- No queues or paperwork
- Perfect for late-night arrivals
- Great deals on data-only packages
Cons
- Requires an eSIM-compatible phone
- Some plans do not include a Thai phone number
- Hotspot rules vary depending on provider
Ideal for short trips and simple high-speed internet access.
Price Range, Validity and Data Plans
Below are typical ranges for 2025.
Tourist SIM (Physical SIM)
- 299 to 449 THB: 8 to 10 days with 10 to 25 GB
- 599 to 899 THB: 15 to 30 days with 20 to 50 GB or unlimited with fair use
- 1,199 to 1,599 THB: long-stay tourist plans 30 to 60 days
eSIM Plans
- 9 USD: small plans with 5 GB
- 10 to 19 USD: medium plans with 8 to 25 GB
- 6 to 39 USD: unlimited 7 to 30-day plans
Note: Unlimited usually means high-speed data until a daily fair-use limit.
Which SIM Card Is Best for You
Backpackers
- Priority: affordability and coverage
- Best choice: 8 to 15 day tourist SIM or low-cost eSIM
- AIS is best for widest coverage with DTAC and True offering good value in cities
Vacationers
- Priority: simple and convenient connectivity
- Best choice: airport tourist SIM or eSIM
- Ideal if you mostly need Google Maps, social media and messaging
Digital Nomads
- Priority: strong 4G and 5G, good upload speeds and hotspot capability
- Best choice:
- Local operator plan with monthly data
- Monthly eSIM plan if you do not need a Thai phone number
- Visit an official shop for best setup and support
Business Travelers
- Priority: reliability on arrival
- Best choice:
- eSIM activated before landing
- Airport SIM with voice and SMS included
- Keep your home SIM active for OTP and banking codes
Physical SIM vs eSIM
Physical SIM
Pros
- Works on any unlocked phone
- Provides a local Thai phone number
- Good if you need calls and SMS
Cons
- Must queue to buy
- Passport registration required
- Can lose or damage the small card
eSIM
Pros
- Instant activation
- No physical handling
- Lets you use dual SIM for convenience
- Perfect for frequent travelers
- Easy to top up or switch plans
Cons
- Only works on eSIM-compatible phones
- Some plans are data-only
- Not transferable between devices
Final verdict:
For most travelers, eSIM is easier, faster and far more flexible.
How to Buy and Activate a Thai SIM Card
A) Buying at the Airport
- Find the AIS, DTAC or TrueMove H counter
- Choose your tourist plan
- Present your passport
- Staff installs and activates the SIM
- Test the data before leaving
B) Buying at 7-Eleven
- Pick a tourist SIM pack
- Ask staff to help register
- If not available, go to the nearest telecom kiosk
- Provide your passport
C) Buying at an Official Telecom Shop
- Choose your plan
- Provide your passport
- Staff activates the SIM or eSIM
- Ask them to enable 5G and hotspot, and show top-up options
D) Activating an eSIM
- Check if your phone supports eSIM
- Buy from a trusted provider
- Receive a QR code
- Add the eSIM profile from your phone settings
- Activate data when ready
- Test the network
Documents Needed
- Passport is required for all physical SIM cards
- One SIM is tied to your passport during registration
- International eSIMs usually do not require passport registration
Tips to Avoid Scams
- Buy only from official counters, telecom shops or reputable online eSIM providers
- Avoid street vendors
- Test your internet before leaving the counter
- Read fair-use rules on unlimited plans
- Keep your SIM packaging and top-up receipts
- Download the operator’s app for usage tracking
Recommended Plans
Short Trip (5 to 7 days)
- Small eSIM plan 5 to 10 GB
- 8-day physical tourist SIM
Two Weeks (10 to 15 days)
- 15-day tourist SIM
- eSIM with 20 to 30 GB or unlimited
One Month (30 days)
- Monthly AIS or DTAC prepaid plan
- Monthly eSIM for remote workers
Long Stays and Digital Nomads
- Monthly operator plans with recurring top-ups
- eSIM if you do not require a local phone number
Why eSIM Is the Best Option for Most Travelers
- Instant activation
You can connect even before landing in Thailand.
- No physical SIM needed
No tools, no tiny cards, no risk of losing anything.
- Keep your home number active
Great for receiving banking codes and work messages.
- Flexible and affordable
Choose exactly how much data you need and switch plans easily.
- Perfect for short and long trips
Small packages for vacations and monthly plans for long stays.
If your phone supports eSIM, it is the easiest and most convenient way to stay connected in Thailand.

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