How to top up a tourist SIM card in Thailand?

Topping up the balance of a tourist SIM card in Thailand is very simple. Even if your main internet package has run out, you can add money to your account and connect a new package or pay for services as you use them.

Top-up methods:

1. Top-up cards in stores like 7/11, FamilyMart, Tesco Lotus or any other supermarket. Tell the cashier "top-up" or "refill," provide the phone number (it's listed on the SIM card packaging) and the top-up amount in baht. You'll receive a receipt with a code that needs to be entered on your phone.
2. Top-up via the operator's app (e.g., My dtac, My AIS). For this, you'll need a bank card (Union Pay, Visa, Mastercard) or an account in the system.
3. Top-up at the operator's service centers (dtac, AIS, TrueMove). Staff there will assist you.

What to do after topping up: Once the money is credited to your balance, you can:

• Purchase a new internet package by sending a USSD command (e.g., *104*package_code#). Package codes are usually listed at the operator's counter or on their website.
• Pay for calls and SMS at standard rates (e.g., 1 baht/min for calls to numbers of other operators).

We recommend reading our detailed article, where we also discuss SIM card setup: How to choose and buy a local tourist SIM card in Thailand.

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