Internet & SIM cards in Bangkok.

AIS Fibre is the fibre arm of AIS, Thailand's largest mobile operator, and one of the most popular home-internet choices for expats in Bangkok. Plans typically run from around 400-600 baht a month for 300-500 Mbps up to roughly 700-1,000+ baht for gigabit tiers, often bundled with AIS Play TV and a mesh router. Coverage is strong across the central condo belt, English-language support is available, and installation in a wired-up condo usually happens within a few days.

True is the other giant, offering True Online fibre frequently bundled with TrueVisions TV and True mobile SIM discounts. Pricing is broadly similar to AIS - roughly 400-900 baht a month depending on speed - and many Bangkok condos are pre-wired for True, making setup quick. True's promotions and bundle deals are aggressive, so it is worth comparing the exact package on offer in your specific building.

3BB (now under the AIS/3BB umbrella) built its reputation as the budget-friendly, no-frills fibre provider, often undercutting the big two on price for a straightforward fast connection without TV bundles. It remains a solid value pick where available, though coverage and building availability vary - always check which providers your condo or house is already wired for before choosing.

In most central Bangkok condos, one or more providers are already wired into the building, so you simply pick a plan, book an appointment and a technician installs a router within a few days. You will usually need your passport and lease; some plans ask for a 12-month contract while others are month-to-month at a slightly higher rate. If you rent short-term, ask your landlord - many furnished condos already include fibre in the rent, so you may not need to sign up at all.

Thailand has three main mobile networks: AIS (the largest, with the best rural and overall coverage), True (strong in cities and heavily bundled), and dtac (now merged with True, often the value choice). In Bangkok all three deliver fast, reliable 4G/5G, so the decision usually comes down to price, the shop nearest you, and whether you want to bundle with home internet. AIS is the safe default for the widest coverage if you travel around Thailand.

Prepaid (top-up) SIMs are the easy starting point: buy one over the counter with your passport, add credit, and pick a data package - no contract, no credit check. Postpaid (monthly bill) plans can be cheaper per gigabyte for heavy users and give you a fixed number, but they require more paperwork - typically a passport plus proof of address or a long-stay visa, and sometimes a deposit for foreigners. Most expats start on prepaid and switch to postpaid once settled.

At the airport and tourist areas you will see 'Tourist SIM' packages - typically 8, 15 or 30 days of generous or unlimited data for a few hundred baht. They are convenient for short trips but poor value if you are staying for months. For a long stay, buy a standard prepaid SIM from an operator shop or convenience store and attach a monthly data package (often 300-600 baht for large or unlimited data), which works out far cheaper than repeatedly renewing tourist bundles.

All three Thai networks now support eSIM on compatible phones, and you can activate an AIS, True or dtac eSIM in-store by scanning a QR code - handy if your phone lacks a spare physical slot. For arrivals, international travel eSIM providers (Airalo, Holafly and similar) let you land already connected, though for a long stay a local physical or eSIM plan from a Thai operator is cheaper. Confirm your phone model supports eSIM before relying on it.

Bangkok has excellent mobile and fixed connectivity: 5G is widespread across central districts, 4G is fast and near-universal, and fibre to the condo comfortably handles video calls, uploads and streaming. For remote workers, a fibre home plan plus a generous mobile data package as backup is the standard setup - if the home line drops, you tether to your phone. Coworking spaces and most cafes also offer reliable Wi-Fi, so staying connected for work is rarely a problem in the capital.

Topping up a prepaid SIM is effortless: use the operator's app (myAIS, TrueiD, dtac), buy a top-up at any 7-Eleven or Family Mart, use top-up machines and kiosks, or dial the USSD code on your SIM starter pack. Once you have credit you activate a data package through the app or a short code. The apps also let you check your balance, buy add-ons, and set auto-renew so your data package refreshes each month without you thinking about it.

You can buy a SIM at the airport on arrival (convenient but pricier tourist bundles), at official AIS/True/dtac shops in every major mall (best for postpaid, eSIM and English-speaking help), or at any 7-Eleven and convenience store for a basic prepaid SIM. Thai law requires SIM registration, so always bring your passport - the shop or store will register the SIM to you on the spot. Mall operator shops are the best one-stop option for expats setting up properly.

Expect roughly 400-1,000 baht a month for home fibre depending on speed, and 300-600 baht a month for a solid mobile data package (unlimited-data plans sit at the upper end). A basic prepaid starter SIM costs around 50-200 baht before you add data. All in, a well-connected expat household in Bangkok typically spends about 700-1,500 baht a month on internet and mobile combined - modest by Western standards for the speeds on offer.

AIS Fibre and True Online are the two biggest and most popular fibre providers, with 3BB a strong value alternative. The best choice often comes down to which providers your condo or house is already wired for, and the exact promotion on offer. Expect roughly 400-1,000 baht a month for speeds from 300 Mbps up to gigabit, frequently bundled with TV and a mesh router.

Most expats start with a prepaid (top-up) SIM because you can buy it over the counter with just your passport - no contract or credit check - and add a monthly data package. Postpaid (monthly bill) plans can be cheaper per gigabyte for heavy users and give a fixed number, but they require more paperwork such as proof of address or a long-stay visa, and sometimes a deposit for foreigners.

All three networks - AIS, True and dtac (now merged with True) - deliver fast, reliable 4G and 5G across Bangkok, so in the city the difference is small. AIS has the largest overall network and the best coverage if you travel around Thailand, which is why many expats pick it as the safe default. In central Bangkok, price and the nearest shop usually matter more than raw coverage.

Yes. AIS, True and dtac all support eSIM on compatible phones, and you can activate one in-store by scanning a QR code - useful if your phone has no spare physical slot. International travel eSIMs such as Airalo or Holafly let you arrive already connected, but for a long stay a local Thai operator plan (physical SIM or eSIM) is cheaper. Check that your phone model supports eSIM before relying on it.

Budget roughly 400-1,000 baht a month for home fibre depending on speed, and 300-600 baht for a good mobile data package (unlimited plans at the upper end). A basic prepaid starter SIM is about 50-200 baht before data. Combined, a connected expat household typically spends around 700-1,500 baht a month on internet and mobile - inexpensive relative to the speeds available.