LINE, and why Thailand runs on it.

The thing to understand first

Most countries have a dominant messenger. Thailand's is LINE, and its position is more total than WhatsApp's in India or the Gulf, because LINE went beyond messaging early and became the layer that businesses use to reach customers directly. It arrived from Japan, took hold in Thailand in the early 2010s, and now has a user base comparable to a very large share of the adult population. The practical consequence is that when a Thai business wants to talk to you, LINE is the channel it reaches for first, ahead of email, ahead of telephone, and far ahead of any other messenger.

This is not a preference you can politely opt out of. A hotel concierge who cannot add you on LINE will fall back to a slower channel and you will get slower service, not because anyone is being difficult, but because their whole workflow, their supplier group chats, their driver dispatch and their internal escalation all live in one application. Being reachable there puts you inside the system.

Who will contact you on it

• Drivers. Both app drivers and private drivers coordinate pickups, send location pins and confirm timings on LINE.
• Hotels and villa managers. Many Bangkok and resort concierges run a guest chat for the duration of your stay and it is far faster than the front desk telephone.
• Hospitals and clinics. The international departments at the major private hospitals commonly use official LINE accounts for appointments, results and follow ups.
• Restaurants. Reservations, deposit confirmations and menu discussions, particularly for private rooms and set menus.
• Tailors, jewellers and clothiers. Fittings, photographs of cloth, progress updates and delivery arrangements.
• Property agents and building management. Viewings, maintenance requests and building notices.
• Schools. Class groups and parent communication, which surprises new arrivals from other markets.
• Banks, airlines, insurers and government agencies, through verified official accounts.

Setting it up before you arrive

Do this at home, and do it while your usual mobile number is still in the phone and receiving messages. LINE verifies with an SMS code to a phone number and it binds the account to that number. Changing the bound number later is possible but fiddly, and doing it from Thailand with a new SIM while your old number no longer receives messages is the situation that produces locked accounts.

How people exchange contacts

Three mechanisms, and you will meet all of them in a week. The QR code is the standard: your code lives in the app, the other person scans it, and you are connected in three seconds without either of you saying a phone number out loud. Learn where your own QR code lives before you need it, because fumbling for it across a restaurant table is a small but real friction. The LINE ID is a text handle you can dictate over the phone or print on a card. And the shake or nearby function connects two phones in the same room, which is occasionally useful in a meeting.

You will also encounter the group chat as an operational tool rather than a social one. A wedding produces eight of them. A villa stay produces one with the manager, the chef and the driver in it. A construction or renovation project runs entirely in one. Thai working culture is comfortable with this in a way that other markets are not, and the correct response is to accept the group, mute the notifications, and read it twice a day.

Official accounts, and telling real from fake

Businesses operate LINE Official Accounts, which are verified business profiles rather than personal ones. A verified account carries a badge, and the badge colour distinguishes the verification tier: this is the check to make before you send anything sensitive. Official accounts are how banks send alerts, how airlines send boarding information, how hospitals confirm appointments and how retailers push promotions. Adding one is voluntary and unfollowing is easy, so there is no cost to adding the accounts that matter to your stay and removing the rest.

The security point deserves its own paragraph, because it applies squarely to the clients we serve. Impersonation of banks and government agencies on messaging platforms is a real and persistent problem in Thailand, as it is everywhere. No legitimate Thai bank will ask you to move money or disclose credentials over a chat message. No legitimate official account will send you a link to a login page and ask you to sign in urgently. Verify the badge, and when in doubt telephone the institution using a number you found yourself rather than one sent to you. If a message about money arrives unexpectedly, treat it as false until proven otherwise.

The rest of the ecosystem

LINE in Thailand extends well past messaging, and knowing what exists means you recognise it when someone refers to it. There is a payments function, a shopping layer, a video and content feed, a sticker economy that Thai users take seriously as a form of expression, an open chat feature for topic based public groups, and the LINE MAN delivery service which grew out of the same ecosystem and remains the largest food delivery platform in the country. Most visitors need none of it beyond messaging and delivery. Residents end up using rather more.

The one function worth learning immediately is location sharing. Sending a pin, or a live location for a short window, resolves nearly every meeting point problem in a city where addresses are difficult. It is the single most used feature in our own client coordination and it works identically whether you are finding a driver at an airport or a private room in a restaurant.

Practical settings for a private household

• Review the setting that lets others add you automatically by phone number. Convenient on arrival, worth turning off once your contacts are established.
• Turn off automatic joining of groups if you do not want to be added to large chats without a prompt.
• Mute rather than leave groups. Leaving a Thai working group chat reads as a stronger signal than you may intend.
• Enable Letter Sealing and confirm it is active on chats where commercial detail is discussed.
• Set a passcode on the application itself if the phone is shared or handled by staff.
• Keep the recovery email current. It is the difference between a five minute device change and a lost account.
• For staff and household coordination, create one clearly named group rather than several overlapping ones, and keep the driver and the house manager in it.

If you only do one thing

Install it, verify it on your home number, set a LINE ID, add a photograph, and turn on backup. Five minutes, done at home, and you arrive able to receive the message from your driver, the message from your hotel and the message from every arrangement your office has made on your behalf. Everything else can be learned in the first week.

Application features, privacy settings and verification procedures change with each release, and impersonation of banks and agencies on messaging platforms is an ongoing risk in Thailand. Verify any financial or official message directly with the institution using contact details you obtained independently, and check current settings within the application itself rather than relying on any written guide.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.