Guide to SIM Cards or eSIMs in Thailand (2025 Update)

Why You Need a Thai SIM or e-SIM

Thailand has one of the best mobile network coverages in Southeast Asia, and although Wi-Fi is common in cafes and hotels, you'll need a SIM card or e-SIM to get around easily

- Constant access to Google Maps or Thailand’s ride-hailing app

- Reliable internet for social media and messaging

Tip: Buying a SIM or e-SIM in Thailand is cheaper and faster than international roaming.

Where to Buy a SIM Card in Thailand

1. At the Airport (Best for Convenience)

Major airports such as Bangkok Suvarnabhumi (BKK), Don Mueang (DMK), Phuket (HKT), and Chiang Mai (CNX) have official booths for

- AIS

- True Move H

Staff will activate your SIM and register your passport in minutes. Most counters operate 24/7.

Price range: 150–600 THB
Activation time: 5–10 minutes
Documents needed: Passport

Ideal for short-term visitors who want immediate internet access.

2. At 7-Eleven or Mini Marts

You can buy prepaid SIM cards from 7-Eleven, Family Mart, or Lotus’s Go Fresh. However, passport registration is required before you can activate it.

Price: 150–400 THB
Availability: Everywhere in Thailand

Staff may not always speak English fluently, but the process is quick.

3. At Official Mobile Stores

If you want help choosing a long-term plan, visit

- AIS Shop

- True Move H Shop

Located in malls such as ICONSIAM, Central World, Terminal 21, and Jungceylon Phuket.

You can get custom data plans or convert to an e-SIM at official stores.

e-SIM in Thailand (Digital SIM Option)

If your phone supports e-SIM, you can connect even before landing in Thailand. e-SIMs work with virtually no physical card needed.

Benefits of e-SIMs

- Activate online before your trip

- Keep your home number active for calls

- Switch between countries easily

- No risk of losing a physical SIM

How to Get a Thai e-SIM

You have two options:

1. Buy Directly from Thai Providers

- AIS e-SIM for Tourists

Buy online or in-store; offers 15–30-day packages with 5G speeds.

Visit the website: www.ais.th 

- True Move H e-SIM

Offers prepaid and tourist packages; supports QR code activation.

Visit the website: www.truemoveh.com

2. Use International e-SIM Providers
If you prefer to set up before your flight, try

- Airalo (Thailand Truphone or DTAC Go) – from $4.50

- Holafly (Unlimited data e-SIM) – from $19

- Nomad e-SIM – flexible daily plans

Perfect for travelers who move across multiple Asian countries.

Network Coverage in Thailand

If you’re in Bangkok, you don’t need to worry about coverage. All major networks, AIS or True Move, offer excellent 5G signals across the city.

For Chiang Mai or Pai, AIS is the best choice, providing the widest and most reliable coverage in the area.

In Phuket or Krabi, both True Move and AIS work well, offering strong signals for seamless connectivity.

If you’re visiting Koh Samui or Koh Phangan, AIS is the most reliable network on the islands.

For Isaan (Northeast Thailand), AIS is again recommended for its extensive rural coverage.

Internet Speed in 2025

Thailand’s 5G infrastructure has expanded rapidly.

Average mobile download speed: 85–95 Mbps

5G in urban areas: up to 900 Mbps (AIS & True)

4G coverage: over 98% nationwide

Streaming, video calls, and Google Maps all work seamlessly.

Final 

Buying a SIM card or e-SIM in Thailand is simple, fast, and affordable.
Whether you choose AIS for its unbeatable coverage, True Move H for its 5G speed, or dtac for its value, you’ll stay connected across Thailand’s cities, beaches, and mountains.

For maximum convenience, consider an eSIM: activate it before you fly, and start exploring Thailand connected from the moment you land.