The Best Prepaid SIM Card for Southeast Asia in 2020

Southeast Asia is a subregion of Asia, consisting of the regions that are geographically south of China, east of India and Bangladesh, north of Australia, and west of New Guinea. The region is the only part of Asia that lies partly within the Southern Hemisphere. Its total population is more than 655 million, about 8.5% of the world’s population. It is the third most populous geographical region in the world after South Asia and East Asia.

Tourism has been a key factor in economic development in many Southeast Asian countries. From the bustling parties of Bangkok, the overwhelming heritage of Cambodia and stunning beaches in Indonesia, South East Asia is an expansive experience in itself.

The most populous country is Indonesia. It is the world’s largest island country with more than seventeen thousand islands. Nature and culture are prime attractions of Indonesian tourism. Indonesia’s most famous island, Bali, is the best place for any tourist who needs a week of absolute relaxation, fragrant cuisine, scenic beauty, culture, and tradition. With its elaborate temples, endless coastline, scenic coral reefs, waterfalls and retreats, Bali is a place of leisure, and simultaneously, a place for the adventurous and the explorers.

The second most populous country is the Philippines. This is a paradise for wildlife, nature and adventure lovers. The country offers clear seas along mountainous islands making it ideal for snorkeling and scuba diving.

Are you planning to visit any country in SEA soon? Then you should take some minutes to read this article because we are going to show you the best prepaid SIM cards that you can use around Southeast Asia. Some SIM cards include unlimited services; others include specific data, texts and minutes to avoid overspending. We are sure that this article is going to be useful for you, so continue reading and learn more!


What Are The Best SIM Cards Offers for Southeast Asia?


 About the providerSim Card Features 
With the SIM2Fly Travel Prepaid, AIS provides a unique deal. As the biggest network provider in Thailand, AIS provides one of the most intertwined network coverages across Asia. Enjoy 3G/4G data in Southeast Asia in the most affordable way.
  • Data: 6GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 10 days
  • Only US $19.90
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Move to TrueMove H & instantly connect to the widest 4G LTE and 3G roaming network coverage. Enjoy TrueMove H's international service and roam with confidence in Southeast Asia
  • Data: 6GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 10 days
  • Only US $19.90
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Keep connected with China Unicom 4G and text, talk and surf at no extra international roaming charges! Enjoy a hassle-free, high-speed mobile internet connection in Southeast Asia - China Unicom makes it easy to stay connected
  • Data: 4GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 12 days
  • Only US $22.90
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As one of the favorite internet network providers among users in the United Kingdom, Three U.K. is now offering its internet coverage in Southeast Asia. Enjoy 3G/4G internet speed connection throughout your trip abroad in Southeast Asia.
  • Data: 10GB*
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 30 days
  • Only US $29.90
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What Is The Best SIM Card for Southeast Asia?


SimOptions – International SIM cards


Do you want to save 100% on roaming charges when traveling to SEA? You can do it by using the international SIM Card for Asia offered by SimOptions. When you travel abroad this is an excellent option; they work with the best mobile operators and have the best SIM card prices. They provide a standard, nano, and micro-SIM. It is a very convenient way of arriving without any stress because the process to obtain it is very easy.

You have to prepare your device and check your settings, arrive at your destination, insert the Asia SIM Card and start browsing with the high-speed internet all over Vietnam, Indonesia, Philippines, to name a few, with a reliable connection at all times. Always remember to check the country coverage before ordering your SIM card. 

Here below are the prepaid SIM cards from SimOptions that you can use when you travel to South East Asia:


SIM2FLY | $19.90 - 6GB

  • Data: 6GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 10 days

Travel SIM Asia | $19.90 - 6GB

  • Data: 6GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 10 days

Asia 12 Days Data SIM | $22.90 - 4GB

  • Data: 4GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 12 days

PAYG AIO15 | $29.90 - 10GB*

  • Data: 10GB*
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 30 days

PAYG AIO20 | $39.90 - 12GB

  • Data: 12GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 30 days

PAYG MBB 12GB | $59.90 - 12GB

  • Data: 12GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 1 Year

PAYG MBB 24GB | $79.90 - 24GB

  • Data: 24GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 2 Year

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AT&T – The main telecommunications company


This company provides mobile telephone services mainly in the United States, however, for you that are thinking about traveling to any country in South East Asia they gave two options that may interest you. The first thing you need to get is a prepaid SIM card, in their stores or website, which is free. Now the two options that we are going to describe below will let you use your phone and stay connected in ASEAN countries.

The AT&T International Day Pass, which costs $10, will give you coverage for 24 hours, which means that during this time you can use your mobile data while you travel, unlimited texts to the world and unlimited calls to more than 100 countries.

The other option is called the AT&T Passport, which has a fee of $60 per month, including 1GB of data, or $120 per month including 3GB. It is important to know that these two options include unlimited messages, and both will let you use your data and minutes for calls from your domestic plan, in more than 200 countries.

Below we describe for you the data package that we recommend with any of the options mentioned:


AT&T 8 GB Promo Plan | $25 — 8 GB


  • Data: 8 GB
  • Credit validity: 30 days
  • Activation required: yes

If you are interested in one of the AT&T options, visit their website. 



O2 – A brand of Telefonica


Traveling to South East Asia does not have to be an issue, with the O2 Travel Inclusive Zone Bolt-On, which costs £4.99 ($6.40) a day, you can enjoy the services that this mobile network operator offers, in 75 destinations. You will be able to use your smartphone anywhere and anytime. Apart from this, this option will give you a daily allowance of 120 texts, 120 minutes, and data roaming.

Of course you will need a prepaid SIM card to add the O2 Travel, here below we show you all the options:


SIM Card 500 MB | £14 ($17.95) — 500 MB


  • Data: 500 MB
  • Calls: 500 min
  • SMS: 500 
  • Credit validity: 30 days
  • Activation required: no

SIM Card 1 G | £16 ($20.52) — 1 GB


  • Data: 1 GB
  • Calls: 1000 min
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 3G | £19 ($24.45) — 3GB


  • Data: 3GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 9 GB | £21 ($26.93) — 9 GB


  • Data: 9 GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 15 GB | £25 ($32.06) — 15 GB


  • Data: 15 GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 25 GB | £30 ($38.47) — 25 GB


  • Data: 25 GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 40 GB | £40 ($51.29) — 40 GB


  • Data: 40 GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

SIM Card 50 GB | £47 ($60.27) — 50 GB


  • Data: 50 GB
  • Calls: Unlimited
  • SMS: Unlimited
  • Credit validity: 30 days
  • Activation required: no

To buy one of these SIM cards, visit their website.



Three – The best network for data


Thinking about traveling destinations in Southeast Asia? Take a look at Three company. Three has 2 types of plan. It includes the Pay Monthly plan and the Pay As You Go plan. The first plan has no monthly contract, no minimum term and no bills. You can choose your preferred package out of their 7 plans and top up.

For holidays package, the company offers a plan that users can use up to 12GB of data every 30 days. The next one is Pay Monthly. Which serves the availabilities of 12 SIM card packages. Their unlimited data deals cost around £10-26 (US$13.5 – 35) a month. Disengaging your fear of going over data allowance. Its package is plus unlimited calls and messages. Both plans offer roaming option over 71 destinations covering around the world. 

You can find Three available prepaid SIM card packages for Southeast Asia listed below:


PAYG AIO15 | $29.90 - 10GB*

  • Data: 10GB*
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 30 days

PAYG AIO20 | $39.90 - 12GB

  • Data: 12GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 30 days

PAYG MBB 12GB | $59.90 - 12GB

  • Data: 12GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 1 Year

PAYG MBB 24GB | $79.90 - 24GB

  • Data: 24GB
  • Calls: Not included
  • SMS: Not included
  • Credit validity: 2 Year

LEARN MORE



Keeping in touch with our family and friends is a very important aspect to be taken into account when traveling, no matter where we are going. Now you know the options available when it is about buying a prepaid SIM card for Southeast Asia. It is your turn now; choose the one that suits you better for your trip to Asian countries!


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