How to keep a mobile phone topped up in Thailand when you’re out of the country

With Thailand’s Covid-19 worries not looking to be improving any time soon, thousands of people who either live in Thailand or visit often are realizing they may lose their Thai mobile phone number due to be stuck outside the country.

This situation has occurred due to most Thai phone companies mandating a phone number expires more than 30 days after the last top up.

If you are one of these people, be aware there are still ways to keep a mobile phone topped up in Thailand even if you are out of the country.

One of them is easy, cheap, takes just a few minutes to do and only requires you to top up your Thai mobile phone once a year.

How to keep a mobile phone topped up in Thailand when you are out of the country

Head to Thai Prepaid Card, a website that allows you to add up to 360 days of validity to any Thai phone number through AIS, True or DTAC.

The service costs 159 baht and adds 10 baht per month to your Thai mobile phone for a year, ie: you pay 39 baht for the service, and the one-time service then allows your phone to remain topped up with 10 baht per month, and active for up to a year.

How to use Thai Prepaid Card top up service

  1. You will first need to find out what your SIM card balance is and the date it expires. If you are not sure, send a text message to your provider requesting account balance. They will then respond with the balance on the card, plus the SIM card’s expiration date should it not be topped up.
  2. Go to Thai Prepaid Card and choose either 90, 180 or 360 days, depending on your needs and what your Thai phone company allows.
  3. Enter your Thai mobile phone number on the Thai Prepaid Card page, and hit the Add to Cart button. You can then checkout and pay for the service.

Once the service has been paid for, the company will automatically top up your Thai SIM card with 10 baht every month. This will keep your mobile phone active until you return to Thailand, and can top it up yourself.


First, check your SIM balance and current validity, to see how many months more you can add. You’ll see the format in DD/MM/YYYY from a message response from your provider.

Next, decide if you need 90, 180 or 360 days more validity.

Finally enter your number on the product page and check out.

You’ll get a series of 10 Baht top ups and when finished, you can check your new SIM expiry date. You’ll also have 30, 60 or 120 Baht extra balance for use on a data package, SMS or call.