Getting online here is genuinely easy and cheap — three solid networks, fast 5G everywhere, fibre to your condo within days. This is the no-nonsense guide to which SIM to buy on day one, when to switch to a monthly plan, and how to get home internet sorted fast.
A SIM is a day-one job — it is step one of our first 30 days guide, because almost everything else (banking app, Grab, PromptPay) needs a Thai number first.
Thailand has three main mobile networks, and the honest truth is that in a city like Pattaya all three give you fast, reliable 5G. You will not regret any of them. The differences are at the margins — national reach, the odd promotion, the app — so most people simply pick whoever has the best current deal at the shop they walk into.
Thailand's largest operator, often rated the best national coverage.
If you travel beyond the cities — islands, mountains, remote provinces — AIS tends to have signal where others fade, which is why many long-stayers default to it. In Pattaya itself the coverage is excellent. The myAIS app handles top-ups and plan changes, and AIS Fibre is a leading home-internet option too.
Excellent urban 5G and aggressive mobile-plus-home bundles.
True is highly competitive in Pattaya, with fast speeds and frequent deals that bundle your mobile plan with True home fibre and TV. The TrueID ecosystem ties it together. If you want one provider for phone and home internet, True's bundles are worth pricing up.
Historically the keen-pricing challenger; merged with True under True Corporation.
dtac and True are now under the same parent (True Corporation, "dtac True"), so the two networks increasingly share infrastructure while still selling as separate brands. dtac remains a solid, often keenly priced choice with good Pattaya coverage. Practically, you are choosing between three storefronts, two of which now share a backbone.
For most expats the difference in daily use is marginal.
Walk into a branded shop in any Pattaya mall, compare the current monthly plans, and pick the best value. The only strong tie-breaker is travel: if you regularly head to remote parts of Thailand, lean AIS. If you want a phone-plus-fibre bundle, lean True. Otherwise, flip a coin.
Day one: a tourist SIM or prepaid starter. Straight off the plane, the simplest move is a tourist SIM from a network counter in the arrivals hall — a fixed data bundle (say 15–30 days of generous data) for a couple of hundred baht, active immediately. It gets you Grab, maps and messaging working before you have even left the airport. A standard prepaid SIM you top up as you go is the other day-one option, and fine if you would rather not commit.
Once you settle: monthly postpaid. When you have an address and a bank account, switching to a monthly postpaid plan is better value for a resident — roughly ฿300–฿600 a month for plenty of data and calls, with heavier unlimited tiers costing more. Postpaid usually needs a Thai address and sometimes a bank account or small deposit, which is why it is a "once you are set up" step rather than a day-one one. The result is a stable number, predictable billing and the best data-per-baht — the right long-term setup.
If your phone supports eSIM, all three networks offer eSIM plans — and travel-focused providers sell Thailand eSIMs you can buy and activate online before you even land, so you arrive already connected. For a resident, a local eSIM from AIS, True or dtac works exactly like a physical SIM (passport registration still applies) without the fiddly little card. Handy too if you want to keep your home number on a second eSIM while running a Thai plan on the first.
Thai law requires every SIM to be registered to an identity document, so you must show your passport when you buy one — at the airport, a branded shop or a 7-Eleven. A reputable shop registers the SIM to you on the spot, which is exactly what you want: an unregistered or improperly registered SIM can stop working without warning. Avoid buying a pre-activated SIM registered in someone else's name from an informal seller — it may be cut off, and you have no recourse. Always register it to your own passport at the point of sale, and keep it simple by buying from an official network store or the airport counter.
If you are renting long term and working from home, you will want proper home fibre rather than relying on mobile data. The main providers are AIS Fibre, True and 3BB, and the good news is that Pattaya is well wired: genuine fibre to most condos and houses, typically ฿600–฿900 a month for several hundred Mbps — plenty for 4K streaming, video calls and remote work, often bundled with a mobile plan or TV package. Installation is usually arranged within a few days of signing up, and a technician runs the cable and sets up the router.
Two practical notes. First, in a condo, check which providers the building already supports — many have one or two preferred carriers wired in, which makes installation near-instant; ask the building office or your landlord before you sign with a specific provider. Second, signing a fibre contract usually needs your passport and proof of address (your lease), and sometimes a Thai bank account for billing — another reason to get banking sorted early. For the gap before fibre is live, or for short stays, a pocket wifi device or simply tethering from a generous mobile plan covers you comfortably.
The engine sequences your SIM, banking, visa and home so the things that depend on each other happen in the right order — your Thai number before the banking app, your lease before the fibre install. Independent, and free.
Build my free plan →This is the easiest piece of the whole move. Unlike banking or visas, getting online in Pattaya is fast, cheap and low-drama. Three good networks, fast 5G across the city, fibre to your door within days for under ฿900 a month. There is genuinely no horror story here — just buy a tourist SIM at the airport on arrival, then upgrade once you have an address.
Do not overthink the network. People agonise over AIS vs True vs dtac when, for daily life in Pattaya, the difference is marginal. Pick the best current deal at the shop you are standing in. The only real tie-breakers are heavy travel to remote areas (lean AIS) and wanting a phone-plus-fibre bundle (lean True). Otherwise any of them is fine.
Register to your own passport, and get fibre once you have a lease. The only rule worth taking seriously is that your SIM must be registered to your own passport at a proper shop — skip the dodgy pre-activated cards. And do not commit to a home-internet provider until you have signed a longer lease and checked which carriers your building supports; until then, a generous mobile plan or pocket wifi bridges the gap easily.
Next steps. Make the SIM your day-one task in the first 30 days guide, line up the banking that postpaid and fibre billing lean on in our banking guide, sort the visa that gets you here in the visa comparison, and budget connectivity realistically alongside rent and utilities in the cost of living study.
A monthly postpaid plan from AIS, True or dtac runs roughly ฿300 to ฿600 for generous data and calls, with heavier unlimited tiers costing more. Short-validity tourist SIMs with a fixed data bundle are also widely sold from a couple of hundred baht and are the easy day-one choice. You buy either at the airport or any branded shop, and registering with your passport is required by law.
AIS, True and dtac all give strong coverage and 5G across Pattaya, so any works well in the city. AIS is often rated the broadest network nationally, which matters if you travel to remote areas; True and dtac (now both part of True Corporation) are highly competitive in urban areas. For most people the choice comes down to the best current deal — and to whether you want a phone-plus-fibre bundle, where True often leads.
Yes. Thai law requires every SIM to be registered to an identity document, so you must show your passport when buying one — at the airport, a branded shop or a convenience store — and the shop registers it to you on the spot. This applies to tourist SIMs, monthly postpaid plans and eSIMs alike. Avoid informal pre-activated SIMs registered in someone else's name, as they can be cut off without recourse.
Home fibre from AIS Fibre, True or 3BB typically costs ฿600 to ฿900 a month for genuine fibre at several hundred Mbps — ample for streaming and remote work — often bundled with mobile or TV. Installation is usually arranged within a few days of signing up. In a condo, check which providers the building already supports before choosing, as that can make installation near-instant.