How to Get Internet in Thailand: SIM Cards, eSIM, and WiFi Explained (2026)

Thailand is one of the easiest countries in Asia to get internet as a tourist — prices are low, coverage in cities and tourist areas is strong, and the options for buying a SIM card are uniquely convenient. Whether you land in Bangkok, Phuket, or Chiang Mai, you'll be connected within minutes of clearing arrivals, and the cost is a fraction of what you'd pay in Europe or North America.

The main thing to understand before you go is the choice between three approaches: setting up an eSIM before you fly, buying a SIM at the airport kiosk, or picking up a cheaper plan from any of Thailand's 13,000+ 7-Eleven stores. All three are straightforward, but they differ in price, data volume, and how quickly you can get connected after landing.

This guide explains how to get internet in Thailand across all options — with current prices, coverage notes for the destinations tourists actually visit (Bangkok, Phuket, Chiang Mai, Koh Samui, Koh Tao, and others), and an honest explanation of what Thailand's famous “unlimited” data plans actually deliver. Here is what you need to know before you fly.

At a Glance

Here is what this guide covers:

Your three main options: Airport SIM, 7-Eleven SIM, and eSIM — compared clearly
Thailand's two main networks: AIS and TrueMove H (following the DTAC–True merger) — which is better for which destinations
Airport SIM prices: What you get at Bangkok Suvarnabhumi, Phuket, and Chiang Mai airport kiosks
The 7-Eleven advantage: Why buying from a convenience store is almost always cheaper than the airport
eSIM for Thailand: Best providers, plan prices, and which networks they connect to
“Unlimited” data plans: What the throttling threshold actually means in practice
Island and rural coverage: What to expect on Koh Tao, Koh Phangan, Koh Lanta, and in northern Thailand

wooden swing hanging from a tree on a Thai beach with longtail boat and limestone cliffs — Thailand offers an extraordinary range of experiences — from ancient temples to some of the world's most beautiful beaches.

Wat Arun temple in Bangkok illuminated at sunset with orange sky reflecting on the river — Thailand offers an extraordinary range of experiences — from ancient temples to some of the world's most beautiful beaches.

Your Options for Getting Internet in Thailand

Option	Best for	Setup	Typical cost (30 days)	Main downside
Airport SIM kiosk	Immediate connection on arrival	5–15 min. passport required	299–499 THB (~$8–14)	More expensive than city options
7-Eleven / city store SIM	Best value physical SIM	10–20 min. passport helpful	299–499 THB (~$8–14)	Need to get to a store first
eSIM (pre-installed)	Instant connection from landing	2–5 min at home before flying	$8–25 depending on data	Data-only. eSIM phone required
Pocket WiFi rental	Groups sharing one connection	10–20 min at airport desk	150–300 THB/day (~$4–9)	Extra device to carry and charge

The overall picture: Thailand is cheap for mobile data no matter which route you take. The eSIM wins on convenience for those with compatible phones; the 7-Eleven SIM wins on price-per-gigabyte for those willing to wait until they reach the city.

Thailand's Two Main Networks

Thailand's mobile market consolidated significantly in 2023 when True Corporation and DTAC merged to form a combined entity operating under the TrueMove H brand. The result is an effective duopoly:

AIS (Advanced Info Service)

AIS is Thailand's largest mobile operator by subscribers and consistently receives strong ratings for coverage quality — particularly in remote areas, the northern highlands, and smaller islands. AIS has the most comprehensive network infrastructure in the country and is the recommended choice for travellers whose itineraries go beyond major cities and beach resorts.

AIS's tourist-focused prepaid plans are straightforward, well-priced, and available at AIS shops, airport kiosks, 7-Eleven stores, and directly via eSIM through AIS's own app or international providers like Airalo and Klook.

Best for: Any itinerary that includes northern Thailand, remote islands, or rural areas. AIS is the safest single-network choice for a mixed Thailand trip.

TrueMove H (True + DTAC Merged)

TrueMove H is Thailand's second major operator, formed by the merger of True Corporation and DTAC. The combined entity has significantly strengthened its network, particularly in Bangkok and major tourist destinations. In urban and heavily visited areas, TrueMove H performs comparably to AIS — often with faster 5G speeds in Bangkok.

TrueMove H's tourist SIM plans are competitive and available through the same channels as AIS. For city-focused itineraries (Bangkok, Phuket, Pattaya, Samui), TrueMove H is an equally good choice.

Best for: Bangkok-heavy trips, urban Thailand, popular beach resorts.

The practical bottom line: For most Thailand tourist itineraries, both networks work well. If you're heading off the beaten path — northern hill tribe areas, remote islands, the Isan region — AIS has the network depth advantage.

Buying a SIM Card in Thailand

At the Airport (Convenient, Slightly Pricier)

All of Thailand's major airports have operator kiosks in the arrivals hall. At Bangkok Suvarnabhumi (BKK) and Don Mueang (DMK), you'll find both AIS and TrueMove H kiosks immediately past customs. Phuket International (HKT) and Chiang Mai (CNX) also have operator kiosks.

What to expect at the airport:

You'll need your passport for registration (required under Thai telecommunications law)
Kiosk staff will insert the SIM, configure the plan, and test connectivity — this takes 10–15 minutes per customer, longer in queues
Plans are clearly priced and staff are experienced with international tourists
Prices are slightly higher than equivalent plans at 7-Eleven or city stores, but the convenience is real

Typical airport tourist SIM pricing (2026):

Operator	Plan	Data	Duration	Price
AIS	Tourist SIM	30 GB	30 days	299 THB (~$8.50)
AIS	Tourist SIM Plus	Unlimited*	30 days	399–499 THB (~$11–14)
TrueMove H	Tourist SIM	30 GB	30 days	299 THB (~$8.50)
TrueMove H	Tourist SIM Max	Unlimited*	30 days	399–499 THB (~$11–14)

*See the “Unlimited Data” section below for what the asterisk means in practice.

Both AIS and TrueMove H have kiosks in the arrivals hall at Suvarnabhumi — you can be connected within minutes of landing.

At 7-Eleven — Thailand's Best-Kept SIM Secret

Thailand has more 7-Eleven stores per capita than almost any country in the world — over 13,000 across the country. Almost every 7-Eleven sells prepaid top-up packages for AIS and TrueMove H. Many also sell SIM cards directly.

Buying at 7-Eleven has two advantages: it's often cheaper than the airport, and it's available everywhere — in every Bangkok neighbourhood, in Chiang Mai's old city, in beach towns across the south, and even on many islands. If you run out of data mid-trip, a top-up is minutes away.

How to buy a SIM at 7-Eleven:

Ask the cashier for the SIM card display (or look for the wall-mounted package rack)
Choose AIS or TrueMove H; select your plan package
Show your passport at the register (required, though enforcement is variable)
The cashier processes the SIM; insert it yourself or ask for help
Dial the activation code printed on the packaging (instructions are on the pack)

Some packages come as a SIM card with a separate data plan voucher — buy both together. If you're unsure, AIS and TrueMove H both have assistance lines you can call after inserting the SIM.

Best tourist SIM plans available at 7-Eleven / city stores (2026):

Operator	Plan	Data	Duration	Price
AIS	Happy Tourist	100 GB	30 days	299 THB (~$8.50)
AIS	Happy Tourist Max	Unlimited* (30GB full speed)	30 days	499 THB (~$14)
TrueMove H	Tourist SIM	30 GB	30 days	299 THB (~$8.50)
TrueMove H	Unlimited* (50GB full speed)	Unlimited*	30 days	399 THB (~$11)

The headline number: 100 GB for 299 THB (~$8.50) is one of the best data deals available anywhere in Asia. For a 30-day trip with normal usage, this covers everything.

Thailand has over 13,000 7-Eleven stores — making it one of the easiest places in Asia to top up your data on the go.

eSIM for Thailand: Set Up Before You Land

For travellers with eSIM-compatible phones, buying and installing an eSIM before you fly means being connected the moment you land — no queue at the airport kiosk, no passport presentation required.

Check eSIM Compatibility

Settings > Cellular (iPhone) or Settings > Network & Internet (Android). Look for “Add eSIM” or “Add Mobile Plan.” Compatible devices: iPhone XS and newer, Pixel 3 and newer, Samsung Galaxy S20 and newer, plus many other recent Android models.

Best eSIM Plans for Thailand (2026)

Provider	Plan	Price	Data	Network	Notes
Roafly	10 GB / 30 days	$10.00	10 GB	AIS / TrueMove H	Good entry-level. hotspot supported
Roafly	20 GB / 30 days	$16.00	20 GB	AIS / TrueMove H	Best Roafly value for standard trips
Airalo	Thailand 10 GB / 30 days	~$13	10 GB	AIS	Most popular Airalo Thailand plan
Airalo	Thailand 20 GB / 30 days	~$20	20 GB	AIS	Good for heavier users
Holafly	Unlimited / 7 days	~$24	Unlimited*	AIS / TrueMove H	Best for heavy users short trips
Holafly	Unlimited / 30 days	~$69	Unlimited*	AIS / TrueMove H	Long-stay unlimited option
Klook	AIS 5G Unlimited / 15 days	Varies	Unlimited*	AIS	Direct AIS plan via Klook. hotspot included

eSIM vs. local SIM in Thailand — the price comparison:
An Airalo 10GB plan at 13 is slightly more expensive than the AIS100 GB SIM card at 299 THB (8.50). For shorter trips where you don't need 100GB, the convenience premium of an eSIM is small. For heavy users or longer stays, the 7-Eleven SIM is dramatically better value per gigabyte.

The multi-destination angle: If your trip combines Thailand with other Southeast Asian countries — Vietnam, Cambodia, Indonesia, Malaysia — Holafly and Airalo both offer Asia multi-country eSIM plans that cover all these countries under one plan. This is significantly more convenient than buying a new SIM at each border.

Airalo – Thailand eSIM Plan

Stay connected across Thailand with instant mobile data. Activate before you fly and use your phone as soon as you land.

Check Airalo eSIM

“Unlimited” Data in Thailand: What It Actually Means

Almost every Thai operator's “unlimited” tourist plan comes with a data speed threshold. This is standard practice in Thailand and worth understanding before you choose a plan.

How it works:

You get a specified amount of data at full 4G/5G speed — typically 15–50GB depending on the plan
Once you reach that threshold, your speed is throttled — usually to 1 Mbps
Your data doesn't stop or cut off; it continues at the reduced speed for the rest of your plan period

What 1 Mbps actually means in practice:

Google Maps navigation: ✅ Works fine (maps load at 1 Mbps without issue)
WhatsApp, Line, messaging: ✅ Works fine
Web browsing: ✅ Works fine for most sites
Social media (photos): ✅ Works fine, slightly slower uploads
Video calls (WhatsApp, FaceTime): ⚠️ Acceptable quality at 1 Mbps; HD calls may buffer
YouTube / streaming at HD: ❌ Will buffer frequently; SD video is possible

The practical takeaway: For navigation, messaging, and standard tourist use, a throttled Thai “unlimited” plan works well even after the full-speed threshold. For travellers who stream video regularly or have heavy data needs, either buy a higher-tier plan with a larger full-speed allowance or monitor your usage carefully. The 100GB/299 THB plan from AIS gives most tourists more than enough full-speed data without ever hitting the threshold.

Free WiFi in Thailand

Thailand has strong café culture, particularly in Bangkok and Chiang Mai, and free WiFi is available at a high density of locations.

Where WiFi works well:

Hotels and guesthouses — essentially universal, including budget accommodation
Cafés and co-working spaces in Bangkok (Silom, Sukhumvit, Thonglor, Nimman in Chiang Mai) — some of the best digital nomad WiFi in Asia
Bangkok's Suvarnabhumi Airport — fast and free
Most resort restaurants on Phuket, Koh Samui, and Krabi
Many 7-Eleven stores have free AIS WiFi (connect without a password)

Where WiFi is less reliable:

Smaller island accommodation — particularly during high season when bandwidth is shared across many guests
Boats and ferries between islands — no WiFi; download what you need beforehand
National parks and jungle trekking areas
Rural guesthouses in northern Thailand

The Bangkok co-working note: Bangkok has one of the highest concentrations of co-working spaces and café WiFi in Southeast Asia. For digital nomads or travellers who need reliable bandwidth for work, Bangkok is excellent. The WiFi infrastructure in good Bangkok cafés often outperforms hotel WiFi.

Pocket WiFi in Thailand: When It Makes Sense

Pocket WiFi rental is a practical option in Thailand — more so than in most European countries — for a specific use case: groups or families sharing a connection.

How to rent:

Airport desks at Suvarnabhumi and Don Mueang arrivals (look for AIS, TrueMove H, or third-party rental desks)
Pre-order online for airport pickup
Hotel concierge services

Typical cost: 150–300 THB per day ($4-9), depending on the data tier. A weekly rental runs 1,000-2,100 THB ($28-60)

When pocket WiFi makes sense:

A family of 3–4 people with multiple devices — splitting a rental is cheaper than 4 individual SIMs
Travellers who need to connect a laptop all day and don't want to use hotspot data from their phone

When it doesn't make sense:

Solo travellers or couples — an eSIM or local SIM is cheaper and simpler
Anyone who might forget to charge it overnight

Coverage in Thailand's Key Destinations

Bangkok

Excellent 4G/5G coverage from both AIS and TrueMove H throughout the city. BTS Skytrain, MRT underground, and major tourist areas (Sukhumvit, Silom, Khao San Road, Chatuchak, Siam) all have strong signal. Suvarnabhumi and Don Mueang airports have full coverage with operator kiosks.

Phuket

Strong coverage island-wide. Patong Beach, Kata, Karon, Phuket Town, and the main tourist areas all have reliable 4G/5G. The interior and west coast roads may have slightly weaker signal in some spots — both AIS and TrueMove H cover the island well.

blue tuk-tuk on a busy Bangkok street at night with Chinese neon signs in the background — Bangkok's streets come alive after dark — Chinatown is one of the city's most atmospheric evening destinations.

turquoise bay in Phuket surrounded by lush jungle and hills under a blue sky — Bangkok's streets come alive after dark — Chinatown is one of the city's most atmospheric evening destinations.

Chiang Mai

Excellent coverage throughout the old city, Nimman Road, and surrounding areas. The road to Doi Inthanon National Park is generally well-covered; mountain summit and more remote trekking areas become patchier — AIS has better coverage in the northern highlands.

Koh Samui

Good coverage in Chaweng, Lamai, and main tourist areas. A cable and microwave link brings connectivity to the island — both operators have coverage. Interior roads and the north coast can be patchier.

elephant eating grass at an ethical sanctuary near Chiang Mai with two people sitting nearby — Chiang Mai is Thailand's gateway to the north — and home to some of the country's most rewarding ethical wildlife experiences.

traditional Thai longtail boats decorated with garlands on a beach with turquoise water and cliffs — Chiang Mai is Thailand's gateway to the north — and home to some of the country's most rewarding ethical wildlife experiences.

Koh Tao and Koh Phangan

Coverage on both islands is available but variable. AIS is consistently the stronger operator on Koh Tao. During Full Moon Party weeks on Koh Phangan, network congestion can affect signal quality as thousands of additional users hit the same towers. Download maps and any essential information before arriving on these smaller islands.

Koh Lanta, Koh Lipe, and Remote Islands

AIS is the recommended network for any of the smaller southern islands. Some tiny or uninhabited islands near Koh Lipe (close to the Malaysian border) may have no coverage at all. The main village and resort areas of Koh Lanta and Koh Lipe have coverage; jungle trails and remote beaches do not.

freediver swimming underwater above a school of fish in clear blue water in Thailand — Koh Tao is one of the world's most popular dive destinations — the underwater world here is the whole point of the trip.

palm tree leaning over a sandy beach at golden sunset on Koh Lanta Thailand — Koh Tao is one of the world's most popular dive destinations — the underwater world here is the whole point of the trip.

Northern Highlands (Mae Hong Son, Golden Triangle, Chiang Rai Province)

AIS has the strongest coverage in Thailand's northern mountain regions. TrueMove H coverage exists in main towns but thins out in rural and border areas. For road trips through Mae Hong Son, Pai, or the Golden Triangle, AIS is the more reliable choice.

ornate white temple Wat Rong Khun in Chiang Rai reflected in a pond under a cloudy sky — Chiang Rai's White Temple is one of Thailand's most visually striking buildings — and well worth the journey north.

tea plantation with traditional wooden bungalows framed by a window in the northern Thailand highlands near Mae Hong Son where internet in Thailand can be limited in rural areas — Chiang Rai's White Temple is one of Thailand's most visually striking buildings — and well worth the journey north.

Frequently Asked Questions

Do I need to show my passport to buy a SIM in Thailand?

Officially yes — Thai telecommunications regulations require ID registration for prepaid SIM purchases. At airport kiosks, passport registration is consistently required. At 7-Eleven stores, the requirement is technically in place but enforcement is more variable — some stores ask, others don't. At operator stores, registration is standard. For eSIM purchases from international providers like Airalo, Holafly, or Roafly, no ID is required.

How much does a SIM card cost at Bangkok airport?

At Suvarnabhumi (BKK) and Don Mueang (DMK) arrivals, tourist SIM plans typically cost 299 THB (~$8.50) for a 30GB/30-day plan, or 399-499 THB ($11-14) for unlimited* plans. These prices are reasonable by international standards — the airport premium in Thailand is smaller than in most European countries. The main reason to choose a 7-Eleven SIM instead is that equivalent or better plans (100GB for 299 THB) are sometimes available in stores at the same or lower price.

Is AIS or TrueMove H better for tourists?

For most tourist itineraries, both are comparable. AIS has the edge in rural areas, smaller islands, and northern Thailand — if your trip includes any of these, AIS is the safer choice. For Bangkok-heavy or major resort trips, TrueMove H is equally good and sometimes faster in 5G areas. Many eSIM providers list AIS as their Thailand network partner, which is why AIS-backed plans are the most commonly recommended.

Can I use my Thailand SIM in other Asian countries?

Thai prepaid SIM cards include roaming in some Southeast Asian countries, but it's limited and can be expensive depending on the plan. For multi-country Asia trips combining Thailand with Vietnam, Cambodia, Indonesia, or Malaysia, a regional Asia eSIM plan is more practical than relying on a Thai SIM's roaming. Providers including Holafly and Airalo offer Asia multi-country plans starting from around $30–40 for 10GB across 8–12 countries.

What happens when I run out of data on a Thai tourist SIM?

On plans with a fixed data allowance (e.g., 30GB), your data stops when the limit is reached. To continue, buy a top-up voucher — available at any 7-Eleven, operator store, or through the operator's app. On “unlimited” throttled plans, your data doesn't stop — it continues at reduced speed (1 Mbps). Top-up is still possible to restore full-speed data if needed.

Is there good internet on the islands during high season?

Popular islands (Koh Samui, Koh Phangan, Phuket) maintain reliable mobile coverage year-round, including during high season. Smaller islands (Koh Tao, Koh Lanta) are generally well-covered in resort areas; WiFi quality at accommodation varies. During peak events like Koh Phangan's Full Moon Party, mobile network congestion is noticeable — the towers handle significantly more users than normal. AIS tends to hold up better under congestion conditions than TrueMove H on smaller islands. Download maps and anything you need before arriving on smaller islands.

Final Thoughts

Getting internet in Thailand is one of the easier logistics of a Thai trip. Prices are among the lowest in Asia, the airport kiosks are efficient, and the 7-Eleven network means a top-up or new SIM is accessible almost anywhere in the country.

For most travellers, the decision is simple: eSIM if your phone supports it and you want connectivity from the moment you land; airport SIM if you want staff to handle setup; 7-Eleven SIM if you want the best price and don't mind a short wait. All three deliver reliable connectivity for a standard tourist itinerary.

The one nuance worth planning for is island coverage. Download offline maps before leaving the mainland or a large island for smaller destinations — AIS gives the widest coverage net for island-hopping, and being prepared means connectivity gaps don't become navigation problems.