What are the best unlimited data packages for SIM cards in Thailand for short-term use?

AIS is really good,but also i had a second sim card in my phone to save numbers for home etc, also do sim cards,but always take ID with you like passport etc.

Think first if it is possible to open a bank account while in Thai 2 months. Is it just walk in on visa exception 60 days? No way you can open bank account with that.

For your comms needs, get a prepaid SIM from the airport or AIS or any shop for 2 months for your communication needs.

Banks, even if they let you sit down and talk, require Thai mobile number. Prepaid numbers are not acceptable, they get recycled after a year, can not be converted to permanent number that belongs to you.

Banks would not accept mobile number that is not linked to your passport and your name, with the receipt showing that. AIS implemented Thai SIM number into my existing Japanese iPhone, I can switch between, depending where I am.

It was November 11.2025. with 3,850THB a year subscription and next day at the bank, they accepted it. I am on Non-O 1 year extension.

@John ********

i recommend AIS Unlimited plan. I have 6 mbps. AIS has best cover here

I use T Mobile in the US, I never used any Thai SIM, as long as it’s internet (FaceTime, Messenger, and texting) all free, a little slow in some spot. We even had internet when we were near the towers (on the islands) in the Andaman Sea.

If on a tourist visa it will not be possible to get a bank account

What make you think with visa for 2 month and SIM car can open account bank?? (Don't read how complicated is new rules and how many foreigners now have Frozen accounts?)

The bank will want you to have an annual phone contract with the SIM registered against your passport details. This will also allow you to use the banks online app. I used Dtac for this purpose. Coverage is excellent everywhere I have been in Thailand and for a small extra amount, I was able to use it in Vietnam too. Cost wise, it's very affordable.

If you're in a major town/city there probably is very little difference in the quality of True and AIS services but if you are rural then one may be better (ask the locals which they use)

15 mb down load , 100gb per month data on a one year paid up from sim

Lazada 1600b

Use it for two month ..

Il n'y a que deux opérateurs en Thaïlande

TRUE et AIS et tous les deux en 5G