Prepaid Data SIM Card Wiki


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Basics Edit

Availability Edit

SIM cards and top-ups are available widely in Thailand from the major carriers (the big three: AIS, dtac and True Move H) as well as a number of smaller 'boutique' provides that lease government bandwidth and equipment or MVNO (such as iMobile or Tune). Purchase of a new SIM card/number is easy, and can be done at operators' shops and any 7-11 as well as at many airport kiosks. Thailand is beginning to require SIM card registration and the production of ID (such as passport for non-Thais) may be required.

Arriving at BKK (Suvarnabhumi) airport in Bangkok, you have the best choice. The 3 major players have their flagship stores in the arrivals hall almost side by side. So you can check prices and compare promotions. All carriers give out monthly promotions which are not mentioned in this article. The situation at DMK (Don Mueng) airport, Bangkok's budget airport and regional airports is different as only True Move shop is on location, but several small shops sell the tourist SIMs of other carriers (AIS/dtac). In Chiang Mai and Phuket, you may find True Move SIMs given out for free.

Concerns for all providers Edit

All of the big three operators do stock all SIM card sizes from normal, micro SIM to nano SIM. Normally the micro SIM card can be popped out from the normal SIM card but the nanoSIMs are often sold separately. It is advised that you request to the staff that you want which SIM card size before you buy.

All of the operators also allow tethering. All of them treat all data going through their network equally therefore your plan would include tethering by default to be used and shared to your other devices. If you are using an iPhone, you may need to perform a network reset or a carrier update for the mobile tethering option to appear.

Normally Thai SIM cards expire 45 days after the last top up unless you are able to add extra validity and "Tourist Cards" sometimes even sooner. So It's very hard to keep them alive outside the country, but start-up prices for new starter packs are minimal. For voice calling overseas heavily reduced rates as low as VoIP providers are offered by the three majors using special IDD codes. Let them give you the cheapest option for your destination which has to be dialled before the country code.

Adding Credit to your phone Edit

Adding credit or airtime is quite easy in Thailand. Airtime gives both validity and ability to make calls or subscribe to data packages. A few physical places where you can topup: 7-Eleven, Family Mart, BigC, Tesco, phone kiosks and the outlets of the Telecoms.

Adding credit online is also quite easy and there are a few options. charges a 4% service fee and accepts Visa and MasterCard as well as local debit cards and works on any device. If you have Bitcoin you can topup at incurring conversion fees, and if you use Webmoney you can do it thru

From outside of the country mobile you're best bet is to pay online. has a reoccurring billing option that is quite useful for this purpose.  Remember you have to top up a Thai SIM card every 45 days or pay to add vality to keep it alive as well as one call or sms activity every 6 months.

Fair Use Policy (FUP) Edit

Fair use is the number of gigabytes you usually see advertised on a plan. Most monthly data plans say they are "unlimited", however they use FUP to say they will give X GB at their fastest speed and once you have used X GB, you will be reduced to 384 kbps, 128 kbps or even 64 kbps. For example: a 3 GB FUP plan for 499 Baht per month means you get 3 GB of data at their highest speed, and then after you use 3 GB your speed will drop. Slow speeds are OK for email and chat, but not good enough for browsing websites.

Network CompatibilityEdit

Over the past years there have been massive changes to all the major operators' networks. Before you purchase any SIM card, please make sure that the network you are choosing is compatible with your smartphones or devices (see below). The big three networks have separate networks operating on more than one set of frequencies. This is often made through domestic roaming on the same network. Operators' new SIM cards usually would roam back to their older networks once you are out of their coverage area (i.e. rural) and you may not not get full speed whilst on roaming. But you should enable (domestic) roaming on your device anyway..

Operator New networks Old networks
  • AIS 3G (2100 MHz 3G DC-HSPA)
  • TH GSM (900 MHz 2G EDGE)
  • TH GSM (900 MHz 3G HSPA)
  • TH GSM 1800 (1800 MHz 2G)
  • dtac Trinet (2100 MHz 3G DC-HSPA)
  • dtac Trinet LTE (2100 MHz 4G LTE)
  • TH-DTAC (850 MHz 3G HSPA)
  • TH-DTAC (1800 MHz 2G EDGE)
TrueMove H
  • TH 3G+ (850 MHz 3G HSPA)
  • True 3G+ (2100 MHz 3G DC-HSPA)
  • True 4G/LTE (2100 MHz 4G LTE)
  • TRUE (1800 MHz 2G EDGE)
  • TOT 3G (2100 Mhz DC-HSPA)

4G/LTE has started with dtac and TrueMove on 2100 MHz only in 2013/14 mainly in the Bangkok metropolitan area and is now being extended to further areas. True has a wider 4G/LTE coverage than dtac while AIS has not started with 4G yet.

IDD Calling Rates

Thailand is one of the few countries where some international calls are charged lower than domestic or VoIP calls. For this you have to use certain IDD prefixes. So the correct order to dial abroad is:

<IDD prefix> <country code> <area code> <local number>

The prefixes differ between operators and are added at the end of each section. The major providers give out special discounted prefixes on which major landlines in Europe, America and Australia can be called for as low as 1 THB per min.

Registration Edit

Under a new law all SIM cards have officially to be registered by July 31st 2015 to avoid being switched off by the provider. However, this deadline is not met by about 50% of the user base. But be prepared to show an ID and do the registration at the point of purchase from now on.

AIS Edit

AIS is known to have the largest network in the nation with close to 50% penetration. It may have the best coverage but often suffers from low speed and congestion. AIS is part of the larger SingTel telco that also owns Optus in Australia and SingTel in Singapore. AIS is the only major provider not to offer 4G/LTE yet. This is prepared for 2016 on the 1800 MHz frequency.

Where to buyEdit

You can get their SIM cards from almost everywhere but if you prefer you can obtain it directly from their stores which are often called Telewiz. Top-ups can be done at any convenience stores such as 7-Eleven or Family Mart or online. 

1-2-Call Edit

1-2-Call SIM cards are their standard pre-paid voice and data cards. Where possible, make sure that you want a 3G Freedom SIM because some 1-2-Call SIM cards are still for their older 2G networks only. 3G Freedom SIMs are sold for 50 THB in "Freedom Smartphone Packs". This includes for 50 THB in a week: 100 MB data and 15 domestic minutes. For more data, these packages are offered to add:

Price Data Activation code Time Overuse
9 Baht 10 MB *777*70# 24 hours 1.50 THB /MB
15 Baht 20 MB *777*71# 24 hours 1.50 THB /MB
49 Baht 160 MB *777*1# 24 hours throttled to 64 kbps
59 Baht 70 MB *777*73# 7 days 1.50 THB/ MB
249 Baht 1 GB *777*74# 7 days throttled to 128 kbps
239 Baht 300 MB *777*75# 30 days 1.50 THB /MB
799 Baht 4 GB *777*76# 30 days throttled to 256 kbps

Freedom 3G NetsimEdit

Their prepay SIM cards for data are called Freedom 3G NETSIM. They cost 50 Baht and come in different starter packs. But the only difference between each of them is what you get from the first 50 Baht that comes with the SIM. Mostly, you are given 50 MB for activation. They are for tablets and modems, but have voice and text too and most of the packs include free unlimited AIS and 3BB WIFI with more than 60,000 sports in the country.

Below are the available packages which you will have to purchase once you have already topped up enough money into your account:

Price Data Activation code Overuse Wifi
Weekly Package:
89 Baht 300 MB *777*311# max. 256 mbit/s AIS
Monthly Packages:
99 Baht 90 MB *777*330# 1.50 THB /MB n/a
199 Baht 300 MB *777*331# 1.50 THB /MB n/a
249 Baht 500 MB *777*335# max. 256 mbit/s AIS
399 Baht 1.5 GB *777*399# max. 256 mbit/s AIS, 3BB
599 Baht 3 GB *777*332# max. 256 mbit/s AIS, 3BB
799 Baht 4 GB *777*334# max. 256 mbit/s AIS, 3BB
1699 Baht 10 GB *777*1699# max. 256 mbit/s AIS

In case you have not subscribed to any of these packages data are 1.50 Baht per MB.

For the plans that include Wi-Fi, you must first obtain your username and password by dial 388#88# and then you can connect any of your devices (can be your laptop or a tablet) to any AIS WiFi or 3BB WiFi nationwide. The WiFi usage is unlimited.

Traveller SIMEdit

Alternatively, AIS offers to visitors their Traveller SIM in two starter packs:

  • for 199 THB you get 7-days unlimited internet (FUP @ 500 MB), 7 days unlimited calls between Travellers SIM users, 15 THB credit with 30 days validity
  • for 299 THB you get 7-days internet with 1.5 GB high speed data, 100 THB credit with 30 days validity.

The SIMs are available at their store at Suvarnabhumi Airport or other stores, 7-11, Family Mart and more outlets The nice thing about Tourist SIMs is no need to learn how to top up and select data packages in your first 7-days.

The default data rate outside packages is THB 2 per MB. These add-ons can be bought:

Price Volume Period Activation
50 THB 160 MB 1 day *777*701#
270 THB 1.5 GB 10 days *777*702#
690 THB 3 GB 15 days *777*703#
9.63 THB unlimited Wifi 1 hour *777*380#

When used up the speed will be throttled from 42 Mbps to 64 kbps.

Further informationEdit

  • IDD prefixe: 005 (quality) or 00500 (budget on some tariffs, from THB 3/min)
  • APN: internet


dtac is Thailand's second largest network by the number of users. It is partly owned by Telenor group from Norway and is the network that owns the biggest wireless bandwidth in the country. Its new network branding is called Trinet (a network that operates on three different frequencies) and its prepay brand is called Happy. 4G/LTE started in 2014 on 2100 MHz in Bangkok only and was expanded in 2015 to Phuket and Pattaya and another 40 cities: 4G coverage map

Where to buyEdit

You can get their SIM cards from almost any shop including at the airports, but if you prefer you can obtain it directly from their stores.

Happy Tourist SIM Edit

Dtac also sells SIM cards with short validiy and unlimited data for tourists. The SIM card is called Happy Tourist SIM. It comes in two varieties of starter packs and is on 2G/3G/4G:

  • Happy Tourist SIM 299: 299 THB, 100 THB credit included valid for 35 days and unlimited internet (FUP 1.5 GB) for 7 days
  • Happy Tourist SIM 599: 599 THB, 100 THB credit included vaild for 35 days and unlimited inernet (FUP 4 GB) for  15 days

Excess data is charged at 2 Baht per MB. You can actually buy their Tourist SIM online here and get it shipped overseas for a whopping THB 350 surcharge worldwide. You can also find the Tourist SIM on to be sent abroad.

Data Packages Edit

You can simply get any of their prepaid SIM cards. It almost does not matter which one you get as long as it is the prepaid Happy on Trinet SIM cards. The SIM card would cost you 49 Baht (USD 1.6) and include very little value you can use (similar to AIS above). You are expected to top up almost immediately to be able to make long calls and use data.

For the unlimited internet plans below, you get connection at full speed for a certain amount of data, then your speed will be capped at the stated fair use policy (FUP) maximum speed which is varied respective to the plan you choose (but you can use them as much as you like, they are unlimited after all).

"Unlimited" Packs Price Data Overuse Wifi Activation code
49 Day-Pass 49 Baht 150 MB 384 kbps n/a *104*29*9#
199 Week-Pass 199 Baht 1 GB 384 kbps n/a *104*28*9#
299 Month-Pass 299 Baht 750 MB 128 kbps n/a *104*353*9#
890 Month-Pass 890 Baht 5 GB 384 kbps Unltd. *104*22*9#

For the plans that include WiFi, you must first obtain your username and password by dial *4000# and then you can connect any of your device (can be your laptop or a tablet) to all DTAC Wi-Fi hotspots. The WiFi usage is unlimited. Dtac WIFI can be found mostly in shopping centres and airports. And the following are the data plans:

Price Included Data Validity

Activation code

49 Baht 75 MB 7 days *104*252*9#
79 Baht 200 MB 7 days *104*253*9#
99 Baht 100 MB 30 days *104*25*9#
349 Baht 1.5 GB 30 days *104*254*9#
549 Baht 2 GB 30 days *104*255*9#

For all these plans:

  • Excess data: 2 Baht per MB
  • To see remaining data, dial: *101*9# <call>

All of the packages above are only on 2G and 3G. For 4G/LTE these two packages are offered (see remarks on top):

  • 399 THB: 3 GB per month , activation: *104*21*9#
  • 650 THB: 6 GB per month, unlimited dtac Wifi, activation: *104*23*9#
  • 799 THB, 12 GB per month, unlimited dtac Wifi, activation: *104*343*9#

Further informationEdit

  • IDD prefixes: 004 (quallity) or 00400 (budget on some tariffs like the Tourist SIM, starting at 1 THB/min for many countries)
  • APN:
  • Website: dtac smartphone SIM , dtac data packs

TrueMove HEdit

True move
TrueMove H is Thailand's third largest network. They were the first provider in to bring 4G/LTE on 2100 MHz only to Thailand. Its 4G/LTE coverage is the best so far in the country and comprises 80% of the population: 4G coverage map in Thai and list in English.

TrueMove is part of the larger True Corp. conglomerates, owned by CP Group which is the biggest retailer owning all 7-Eleven and Tesco stores in Thailand.

One thing you should know is that TrueMove and TrueMove H are two different networks (but they are both owned by the same company). TrueMove is no longer allowed to sell their new SIM cards as their license to operate has come to an end. Customers from the existing TrueMove networks are being transferred to the new TrueMove H. 

Where to buyEdit

You can get their SIM cards from almost everywhere but if you prefer you can obtain it directly from any of the True Corp stores (including True Online and True Visions stores). Electronic top ups at all 7-11 stores or Family Mart.

When you arrive at BKK airport, you should check their promotions at their shop in the arrivals hall at concourse A, 2nd floor, opposite Gate 5. They offer often promotion mostly on their tourist SIM which are not available at other places and are mostly for starting-up and the first package only.

Tourist SIM Edit

TrueMove H also sells SIM cards for tourists. The SIM card is called the 3G Tourist Inter SIM. It comes in 3 starter packs:

  • Free SIM (promotional): free, 20 MB data, 10 THB call credit valid for 7 days
  • Starter Pack: 49 THB, 90 MB data, 20 THB call credit valid for 30 days
  • Value Pack: 299 THB, 1.5 GB high speed data, throttled to 128 kbps, 100 THB call credit valid for 7 days.

To activate, type *123# <call>. After the included bundle has expired, then you can add these top-up bundles: 

Price Data Wifi Validity Activation Code
50 Baht 160 MB - 1 day *900*8915#
150 Baht 500 MB - 3 days *900*8916#
200 Baht 1 GB - 7 days *900*8917#
350 Baht 1.5 GB unltd. 15 days *900*8918#
650 Baht 3 GB unltd. 30 days *900*8920#
299 Baht 1.5 GB + 150 THB credit - 7 days *900*1903#

Default data outside packs or for overuse is 1 THB per MB. The Tourist SIM is on 2G and 3G only. 

3G SIM CardsEdit

You can simply get one of their prepaid SIM cards with 3G data called iNet. The SIM card is sold for 49 THB and includes very little value you can use (similar to AIS and dtac above). You are expected to top up almost immediately to be able to make long calls and use data.

For the "unlimited" internet plans below, you get connection at full speed for a certain amount of data, then your speed will be capped at the stated fair use policy (FUP) maximum speed which is varied respective to the plan you choose.

For the plans that include Wi-Fi, you must connect to the @TRUEWIFI hotspots (not the .@ TRUEWIFI) and then log-in using your phone number. They have the biggest WIFI network with more than 100,000 hotspots: Hotspot Locator must also log out after you finish. These monthly iNet packages are offered on 2G, 3G and WiFi for Prepaid:

Price Data (FUP) Wifi Overuse Speed Activation Code
150 Baht 1 GB - cut off *900*8903#
199 Baht 1 GB unltd. 128 kbps *900*1801#
299 Baht 1.5 GB unltd. 128 kbps *900*1329#
399 Baht 3 GB unltd. 128 kbps *900*1339#
699 Baht 6 GB unltd. 384 kbps *900*1369#

If you finish your data, then you would be charged at 1.25 Baht per MB.


TrueMove sells this promotional prepaid SIM on 3G, 4G/LTE and WIFI for tablets and modems. The starters are sold for 79 THB including 500 MB in 30 days

Make a network scan, if 4G is available. Speed is up to 100 Mbps on 4G/LTE. Default rate outside package is 0.25 THB per MB. These monthly 4G add-ons are on offer:

Price Data Overuse




179 Baht 1.5 GB 128 kbps *900*8816#
299 Baht 2.5 GB 128 kbps *900*8817#
399 Baht 4 GB 128 kbps *900*8818#
699 Baht 8 GB 384 kbps *900*8819#
799 Baht 12 GB 384 kbps *900*8820#

Further informationEdit

  • IDD prefixes: 006 (quality) or 00600 (budget on some tariffs like the Intersim starting from 1 THB/min to major countries)
  • APN: internet; username and password: true
  • Website partly in English:
  • To change SMS Notifications to English: Press *700 [CALL], then 1 (For English), 5 (Change Language), 2 (SMS), 2 (English), 1 (Confirm)
  • Or, Press 9304 [CALL], then follow voice prompts to switch language between Thai and English.
  • To check your remaining balance: Dial 9302 [CALL] (voice response) or Dial *123# [CALL] (SMS response).

Tune Talk (on TOT) Edit

Tune talk

Tune Talk is one of the first MVNOs in the country. It started in 2013 and targets visitors, youth and professionals. It uses the network of state-owned TOT. Tune Talk is affiliated to AirAsia and the most accessible MVNO for tourists on the TOT network.

Coverage Edit

Tune Talk is a MVNO on the TOT network in 3G on 2100 MHz only. So for using Tune, you need to have a 3G device on this frequency. TOT network is quite good in the Bangkok and most towns giving very high speeds on DC-HSPA+ as it doesn't have so many users as the 3 private networks. But it's in 3G only, with no fallback to 2G/GSM and still very patchy in the countryside. TOT 3G coverage map

So it might be a good choice if you stay in Bangkok, but for travelling throughout Thailand better choose one of the three major networks.

Where to buy Edit

Their discounted starter packs are available on all Thai AirAsia flights along with the duty-free items. You can ask any flight attendant for this SIM card. Be sure not to get a Malaysian Tune Talk SIM. This is also a way to buy the SIM before landing, as at Don Mueang airport in Bangkok the choice of SIM cards is very low.

The "TuneNet!" SIM is available for THB 99 with 500 MB data at their dealers too. If you only get a "TuneTalk" SIM, you can change to TuneNet! by typing *788# and select "Tune Net".

Top up vouchers are available for THB 50, 100, 300 and 500 to give a valiability for 30 to 90 days. They are sold at Thailand Post, Big C or as electronic top-up at 7/Eleven stores.

Data packages Edit

Data on the TuneNet! SIM is by default outside of packages THB 0.50 per MB. You can choose these monthly packs to add data by typing *788#:

  • 250 MB: 50 THB
  • 500 MB: 100 THB
  • 1.5 GB: 300 THB
  • 2.5 GB: 500 THB

Check data balance by typing *700# <call>. Overuse is charged at the default rate. You can buy a new package anytime.

Further information Edit

  • IDD prefixes: 007 or 008, but rates are not as low as True or dtac
  • APN: tunetalk /or/ internet
  • Website in English:

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