I know what you’re thinking. Alan, you who so often write about journeys of self-discovery and the luxury of being offline, now you’re writing a guide to the internet? Yes! Because travel has many faces, and in today’s Thailand, stable internet access is not a digital leash, but the key to freedom, security and a deeper experience. It’s your map, translator and personal driver all in one small SIM card.

Forget about horribly expensive roaming, which will give you a financial heart attack when you return to the UK. I’ll show you how to stay connected to the world for a whole week for the price of one Thai pad thai. I have tested various options myself – from convenient Thailand eSIM cards activated on the plane to local cards bought at 7-Eleven stores in the middle of the night. This guide is the essence of my experience – pure practice that will allow you to focus on discovering the unknown.

How does mobile internet work in Thailand? The most important information for tourists

Mobile internet in Thailand is surprisingly good, fast and cheap. The infrastructure is so well developed that even in places seemingly cut off from civilisation, you will often find a solid 4G/LTE signal, and in many places also 5G. However, before you choose an offer, learn about a few key differences.

How does a tourist SIM card differ from a regular SIM card for Thai residents?

The main difference lies in the simplicity of purchase and ready-made packages. A tourist SIM card (Tourist SIM) is a product created for you. You buy it, insert it into your phone, and it works right away – it already has an internet package and minutes for a specific period (e.g. 8, 15 or 30 days). It is a plug-and-play option, ideal for shorter trips, available immediately at the airport or at 7-Eleven.

A regular SIM card for residents is often cheaper in the long run, but requires a little more effort. First, you buy a “blank” SIM card (for about 50 THB), and then you select and activate the Thailand internet package you are interested in yourself, using USSD codes or in the app. This is a better solution if you are staying in Thailand for more than a month or need a non-standard data package.

What is the average data download speed in Thailand?

The average internet speed in Thailand, especially on mobile networks, is among the highest in the region. Speedtest by Ookla data from 2024 shows that the median download speed for the fastest operators (mainly AIS) is close to 100 Mbps. In practice, in cities and popular resorts with 5G networks, you can easily reach 200-300 Mbps. That’s more than enough to smoothly stream 4K video, make video calls, or send photos instantly. Even in less urbanised areas, the 4G/LTE network provides a comfortable 30-50 Mbps.

Is the 5G network widely available throughout Thailand?

The 5G network is not only standard in major cities (Bangkok, Chiang Mai, Phuket), but is also increasingly covering smaller towns and popular islands. Major operators are investing heavily in it. However, do not expect 5G coverage on every small island or deep in national parks. Where 5G ends, a reliable 4G/LTE network is almost always available.

What to watch out for with the internet in Thailand? Roaming, coverage and censorship

Using the internet in Thailand is easy, but it’s worth knowing a few pitfalls. A moment of inattention can cost you a fortune (roaming!), and ignorance of local realities can be frustrating (blocked websites). Here are my practical tips on how to avoid the most common problems.

Is roaming from the UK in Thailand safe for your wallet?

Absolutely not. Using data roaming from a Polish operator in Thailand is financial suicide. When it comes to roaming in Thailand, the price is astronomical and usually calculated per 100 KB of data. Rates of 30-50 PLN per 1 MB (yes, megabyte!) are not uncommon in standard tariffs. This means that uploading a single photo to Instagram can cost you more than lunch at a restaurant. Turning off data roaming should be the first thing you do after landing in Bangkok.

Where in Thailand are there dead zones with no internet coverage?

Although coverage in Thailand is impressive, there are places where your phone will lose connection with the world and display the dreaded message (Connection Error). Expect no or weak signal deep inside large national parks (e.g. Khao Sok, Kaeng Krachan) and on the open sea during transfers between remote islands. However, in my experience, in 99% of tourist destinations – from the beaches of Koh Lanta to the temples of Chiang Rai – you will have at least a stable 4G signal.

Which websites are blocked in Thailand and is a VPN necessary?

Thailand censors the internet. This mainly applies to pornographic and gambling websites and content considered offensive to the monarchy (strict lèse-majesté law). For the average tourist, these blocks are usually not very troublesome – social media and instant messengers work normally. However, a VPN is useful for two reasons: security when using public Wi-Fi (and you will find free Wi-Fi in many places in Thailand) and access to Polish VOD services (Player, TVP VOD, Canal+ Online), which are geographically blocked outside Poland.

Is the internet necessary to use the Grab and Bolt apps in Thailand?

Yes, it is absolutely essential. Grab and its cheaper competitor Bolt are the basic tools for getting around cities. They require a constant internet connection for GPS location, communication with the driver and payment. Without a data package, you will be at the mercy of taxi drivers and tuk-tuk drivers negotiating prices “on the street”, which usually ends up with you overpaying.

Which internet service should tourists choose in Thailand? Comparison of SIM, eSIM and Pocket Wi-Fi offers

The choice depends on the length of your stay. The operator market changed in 2023 after the merger of the giants: TrueMove H and DTAC. They now operate as one company (True Corporation), although for retail customers, these brands still operate separately. Their main competitor remains AIS.

What is the best mobile operator in Thailand for tourists: AIS or TrueMove H / DTAC?

The safest and most recommended choice for tourists is AIS Thailand. For years, it has been winning rankings (e.g. Ookla) in terms of speed and 5G coverage, especially outside cities. The group comprising True Move H Thailand and DTAC Thailand is a strong runner-up – their offer is competitively priced and their coverage in cities and resorts is excellent. In practice, for most tourists, the difference will be negligible, unless you are going to remote areas – then go for AIS.

Operator	Characteristics	Best for
AIS	Leader in 5G speed and coverage rankings. Best coverage “in the jungle” and on remote islands. Slightly more expensive in some tariffs.	People who require reliability in every corner of the country, digital nomads.
TrueMove H / DTAC	After the merger, they have the largest user base. Great tourist packages (often with large 5G packages). Very good coverage in cities.	Tourists looking for good value for money, staying in popular destinations.

What internet packages does DTAC/True offer for foreigners?

Both brands have almost identical “Tourist SIM” packages. The standard is an 8- or 10-day package with a large data package (e.g. 15 or 50 GB) for approx. 299-349 THB. It usually also includes unlimited calls within the network and free data transfer for selected social media apps. This is a safe and sufficient option for a typical holiday.

Which operator offers true unlimited internet in Thailand?

In tourist offers, “No Limit” usually means unlimited data with speed restrictions after the main package has been used up. For example, you get 15 GB at full 5G speed, and then the internet slows down to 384 kbps (which is only enough for instant messaging). To have real unlimited high-speed internet in Thailand (e.g. 10 Mbps, 20 Mbps or Max Speed) for the whole month, it is best to buy a regular SIM card and activate the appropriate package in the operator’s app (cost approx. 300-450 THB for 20-30 days).

How much does unlimited internet cost per month in Thailand?

For a monthly package with a large amount of data (e.g. 50-100 GB) or unlimited internet with a fixed speed (e.g. 20 Mbps), you will usually pay between 300 and 600 THB (approx. 35-70 PLN). Such offers are available in mobile applications of operators (e.g. myAIS, True iService) and are much more cost-effective than extending tourist packages.

Is renting a Pocket Wi-Fi in Thailand more cost-effective than a SIM card?

Rarely. Renting a router costs around 150-250 THB per day, while an 8-day SIM card costs around 299 THB. Pocket Wi-Fi only makes sense for large groups that need to connect multiple devices (e.g. laptops without eSIM) and want to share a single bill, although even here, the Hotspot function on your phone usually wins in terms of convenience.

How and where to buy a Thai SIM card? Step by step from eSIM to 7-Eleven

Fortunately, the question of how to buy a SIM card in Thailand is very simple. Just remember one thing: your passport is essential, as SIM card registration in Thailand is mandatory (it is a legal requirement).

How to activate an eSIM (e.g. Airalo) before flying to Thailand?

eSIM is the most convenient option. The process is as follows:

1. Check if your phone supports eSIM (iPhone XS/XR and newer, Samsung S20 and newer).
2. Purchase a package online (e.g. through Airalo, Nomad, or directly on the AIS/True operator’s website). Prices in international apps tend to be slightly higher than local rates, but you are paying for convenience.
3. Scan the QR code and install the eSIM profile before departure (when you have Wi-Fi).
4. After landing, enable the eSIM profile in your settings and activate data roaming *for this specific card* (not for your main British card!).

Where to buy a traditional SIM card after arriving in Bangkok?

Are SIM card outlets open 24/7 at Suvarnabhumi Airport (BKK)?

Yes, the AIS, True and DTAC stands in the arrivals hall are open around the clock. The prices of tourist packages may be slightly higher here than in the city, but the staff will do everything for you in 2 minutes. This is the most convenient option after a long flight.

Can you buy and top up a SIM card at 7-Eleven stores in Thailand?

Yes, you can buy a SIM card (often TrueMove H) at most 7-Eleven stores. You must have your passport with you – the salesperson will take a photo of it and register the card in the system. Please note: sometimes the registration system may be unavailable at night, and in very touristy areas, Thailand SIM cards may run out.

How to manage your internet package in Thailand? Apps, codes and top-ups

How to top up your internet account in Thailand via a mobile app?

Download the operator’s app (e.g. myAIS, True iService, dtac app). This is your command centre. You can check your data usage, account validity and top up your account using a payment card (Revolut/Zen work without any problems) or Rabbit LINE Pay.

How to check your internet account balance in Thailand with a short USSD code?

USSD codes are a quick way to check your balance without the internet:

• AIS: *121# (balance), *121*3# (internet)
• TrueMove H: #123# (balance), *900# (internet)
• DTAC: *101*9# (balance), *101*1# (internet)

How to extend the validity of your SIM card in Thailand?

If you want to keep your number for your next trip, you can purchase an extension (called Validity) for pennies (e.g. 2-3 PLN per month). At AIS, the service is called “Mao Mao”, and at DTAC, “Jai Dee”. You can find these options in the operators’ apps.

Internet in Thailand for digital nomads and remote workers

Is the internet in Thailand stable enough for video calls on Zoom?

Yes. Thailand has one of the best fibre optic infrastructures in Southeast Asia. The internet in cafés and hotels in cities such as Chiang Mai and Bangkok usually allows for smooth video conferencing. However, mobile internet in Thailand, especially 5G, is often more stable and faster than public hotel Wi-Fi, so it is worth having a large data package as a backup (hotspot).

What are the best places to work remotely with good internet in Thailand?

Chiang Mai and Bangkok are world leaders. Koh Phangan (for island lovers) and Phuket are also popular.

Which cafés in Chiang Mai have the fastest internet for tourists?

The café scene in Chiang Mai is changing rapidly. Once iconic places sometimes disappear.

• Yellow Co-working (Nimman): A professional space for nomads with super-fast internet, open 24/7 (for members) or during standard hours.
• Punspace: A Chiang Mai legend, with several locations (e.g. Wiang Kaew, Tha Phae Gate). Reliable internet and a quiet place to work.
• Ombra Caffe: A popular café with good Wi-Fi and plenty of power sockets.
• Alt_ChiangMai: Modern co-living and co-working space with excellent network infrastructure.

Note: The formerly popular CAMP at Maya in the Maya shopping centre has undergone ownership changes and modernisation. It is worth checking its current status on site before planning a whole day’s work there.

How does the internet work on remote islands in Thailand (e.g. Koh Lipe)?

On Koh Lipe and similar islands (Koh Tao, Koh Lanta), 4G coverage is widespread, and 5G is available in the main areas. AIS usually offers the best signal penetration here. Problems may occur during storms or power outages, which are more common on smaller islands.

What is the cost of installing fibre optic internet in a house in Thailand?

If you are renting a flat for a longer period (e.g. 6-12 months), fixed internet in Thailand, i.e. installing your own connection, is the best option. The subscription cost for speeds of 500/500 Mbps is approximately 500-600 THB per month. Providers such as AIS Fibre and TrueOnline often offer free installation and a Wi-Fi router with an annual contract.

Internet in Thailand – my summary and final recommendation

• Short holiday (up to 2 weeks): Buy an eSIM (Airalo/Nomad) for convenience or a Tourist SIM starter pack at the airport (AIS/True) for a lower price.
• Longer stay / Digital Nomad: Buy a regular SIM card (not a tourist one) at an operator’s store or 7-Eleven and activate a monthly package via the app (e.g. 200-300 THB for 30 days of unlimited internet at 10-20 Mbps).
• Operator: Choose AIS if you plan to travel a lot outside the cities. Choose True/DTAC if you are staying in resorts and care about promotions.

Stay online, but remember – the most beautiful views in Thailand do not require an Instagram filter, just open eyes.