Mobile phone users in Thailand must register their SIM cards, according to the National Broadcasting and Telecommunications Commission, the methods and rules for registration are becoming clearer, but thousands of people are still confused about what it means in practice.
Registering SIM cards in Thailand The new rules come into effect on February the 1st, after which users will have 6 months to provide their personal details (name, ID, and of course the phone number in question) after which they will not be able to use their SIM. If you are a foreign citizen resident in Thailand, you will need to take your passport to register at any of the “subscriber information registration points” setup at Big C and Tesco Lotus, as well as 7-11 stores. Tourists who come to Thailand for a holiday and purchase a prepaid SIM card will simply need to show ID at the point of purchase in order to qualify as ‘registered’.
This means a passport (valid for at least 6 months, which it should be anyway if you just travelled here) in order to register your SIM card. Even if you have previously provided such information when you bought a SIM card in Thailand, it’s highly likely that you are not registered because the mobile operators seem to have completely ignored or failed to implement the proper registration procedures. How to register your prepaid SIM in Thailand Even if you think you already registered your SIM card when a similar policy was rolled out by a previous government several years ago, we’d still advise that you go into the local store of your network provider to double check your phone is actually registered.
Alternatively, you could always try calling the customer service numbers below, but good luck with that. Here are the customer service contact details for the mobile operators in Thailand: AIS: call 1175 from your mobile, or +66 2299 5000 from abroad. DTAC: call 1678 (press 7 for English) from your mobile, or +66 2202 8000 from abroad. True: call 1331 from your mobile, or +66 89100 1331 from abroad.