By NaJade · DJ in Bangkok · Published October 20, 2026
The easiest way to get online in Bangkok is a tourist SIM or eSIM from AIS or True, Thailand’s two big networks. Expect roughly 400–500 baht for about eight days of fast data, around 700 baht for 15 days, and about 900–1,200 baht for 30 days. You need your passport to register, and you can buy one at the airport on arrival.
Your phone is your map, your Grab account, your translator and your wallet in Bangkok, so sorting data is the first thing to do after you land. I help visiting DJ friends with this all the time. The good news: Thai mobile data is fast, fairly cheap and easy to buy — as long as you know the few rules that changed recently.
Buy a tourist SIM or eSIM from AIS or True. About 400–500 baht covers eight days of data, roughly 700 baht covers 15 days, and about 900–1,200 baht covers a month. Bring your passport, buy at the airport or an official shop, and top up at any 7-Eleven if you run out.
AIS vs True: Which Network?
Thailand effectively has two big mobile operators. AIS is the long-time leader, and True merged with dtac in 2023 to become the other giant. Both cover Bangkok extremely well, including 5G across most of the city.
| Network | Strengths | Tourist SIM |
|---|---|---|
| AIS | Most consistent quality and reliability in Bangkok; strong coverage outside the city | Traveller SIM / tourist plans, 5 to 30 days |
| True (True-dtac) | Fastest 5G download speeds in Bangkok; wide 5G availability | Tourist SIM and “Infinite” plans, 8 to 30 days |
In practice, either is fine for a city trip. Opensignal’s 2026 Thailand network report found AIS ahead on reliability and True-dtac ahead on 5G speed in Bangkok. If you’re heading to remote islands or national parks afterwards, ask locals which network works best there.
What a Tourist SIM Costs
| Length | Typical price | What you usually get |
|---|---|---|
| About 8 days | ~399–499 baht | Fast data (some plans capped, some unlimited), some local call time |
| 15 days | ~699 baht | Unlimited data, sometimes at a reduced speed after a quota |
| 30 days | ~899–1,199 baht | Large or unlimited data allowance |
Packages and promotions change often, and airport counters sometimes sell slightly different bundles than the published ones, so read the price board before you pay. Check the official pages for True-dtac’s Tourist SIM and eSIM packages and AIS’s plans for tourists for the current offers. For overall trip budgeting, see how much a trip to Bangkok costs.
Where to Buy and What You Need
- At Suvarnabhumi: AIS and True counters in the baggage-claim area and in the arrivals hall on Level 2, after customs.
- At Don Mueang: counters in the international arrivals hall.
- In the city: official AIS and True shops in most major malls — often with cheaper long-stay plans.
- Bring your passport. SIMs must be registered to your passport, in person at a shop or authorised counter. Since rules tightened in 2025–26, you may also be asked for a quick face scan.
- Limits: foreigners can register a maximum of three SIMs per provider.
- Cash helps. Some small airport kiosks are cash-only; the bigger shops take cards.
Only buy from official counters and shops, not from people approaching you in the hall — more on that in Bangkok scams to avoid. Once you’re connected, read how to get around Bangkok.
Physical SIM, Local eSIM or Travel eSIM App?
| Option | Pros | Cons |
|---|---|---|
| Physical tourist SIM | Thai number, calls, cheapest data | Swapping out your home SIM; airport queues |
| AIS / True eSIM | Thai number, keeps your home SIM active | Phone must support eSIM; passport registration still needed |
| Travel eSIM app (Airalo etc.) | Install before you fly, online the moment you land | Usually data-only, no Thai number; often pricier per GB |
Travel eSIM apps run on the same local networks, so speed is similar. A Thai number matters more than people expect: restaurants, delivery riders, some apps and hotel staff often want to call you. If you’re staying a while and working remotely, see is Bangkok good for digital nomads? and coworking spaces in Bangkok.
A Note From NaJade
Whenever a DJ friend flies in to play with me, the first message I get is usually “how do I get internet?” My answer is always the same: get a tourist SIM or eSIM at the airport, from the official counter, and don’t overthink it. I’ve used both networks over the years and honestly the difference in Bangkok is small. What matters is having data before you need it — before the taxi, before the hotel check-in, before you’re trying to find a venue at midnight. Keep your passport handy for registration, top up at 7-Eleven, and you’ll barely think about it again for the rest of your trip.
More: Suvarnabhumi Airport to Bangkok city, the best cafés in Bangkok, and is Bangkok safe?
Frequently Asked Questions
How much is a tourist SIM card in Bangkok?
Which is better in Bangkok, AIS or True?
Do I need a passport to buy a SIM card in Thailand?
Can I buy a SIM card at Suvarnabhumi Airport?
Is an eSIM a good idea for Thailand?
How do I top up a Thai SIM card?
About the Author
NaJade is a Bangkok-based DJ playing progressive house, melodic EDM, pop, and Thai music across clubs, rooftops, and weddings in Thailand — and has lived in the city long enough to have made every one of these mistakes at least once. Find him on YouTube, Instagram, and TikTok.
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