How to top up your AIS account without the hassle
Why your AIS balance disappears faster than you think
You land in Bangkok, grab a SIM at the airport, and everything works fine for two days. Then the data stops. Your balance is gone and you are standing outside a 7-Eleven trying to remember how Thai top-up codes work. I have been there. It is never at a convenient moment.
AIS is the biggest mobile network in Thailand. If you are on a prepaid SIM, you will need to add credit or buy a data package on a regular basis. You do not need to hunt for a convenience store or figure out a Thai-language menu. You can buy a recharge code from us and apply it yourself in under a minute.
Here is what you need to know.
What you can buy
We carry two types of AIS top-ups on our store: straight call credit and data packs. Credit goes into your main balance and can be used for calls, SMS, or to subscribe to packages through the AIS system. Data packs are preconfigured bundles that activate when you redeem the code.
For credit alone, the denominations are small. THB 30 credit runs about 1 USD. THB 60 is about 2 USD. THB 100 is about 3 USD. If you need more room, THB 200 credit is about 7 USD. These are approximate prices since we bill in USD.
If what you actually need is data, the packs make more sense. A 2 GB data pack valid for 5 days costs about 4 USD. A 4 GB pack valid for 10 days is about 5 USD. For heavier use, a 20 GB data pack lasting 7 days runs about 9 USD. There is also an unlimited data option throttled at 4 MB/s for 7 days, which costs about 8 USD. That one makes sense if you are streaming or video-calling and do not want to worry about a cap.
Which option should you pick
It depends on how long you are staying and what you do with your phone. If you are in Thailand for a weekend, the 2 GB pack for 5 days at about 4 USD is probably plenty for maps, messaging, and some browsing. If you are working remotely or staying a week or more, the 20 GB pack or the unlimited option at 4 MB/s will save you from constantly recharging.
Credit is the flexible choice. You can use it for calls and texts, or convert it into a data package directly through AIS by dialing a subscription code. Some travelers prefer this because it leaves options open. Others just want a data pack that works immediately with no extra steps. Neither approach is wrong.
How to buy and activate your AIS top-up
The process is simple. You pick what you need, pay, and receive a code by email. Then you apply it to your AIS number. Here are the exact steps.
- Go to the AIS top-up section on our store and choose either a credit amount or a data pack.
- Add it to your cart and complete checkout using your preferred payment method.
- Check your email for a message from us containing the recharge code.
- On your phone, dial the AIS recharge code followed by your PIN as instructed in the email, then press call.
- Wait for a confirmation SMS from AIS confirming that the credit or data pack has been applied to your number.
That confirmation message matters. If you do not receive it within a couple of minutes, try the code again or reach out to us. Sometimes network delays cause the SMS to arrive late, but it should come through.
Common mistakes to avoid
The most frequent problem I see is people buying a data pack when their SIM has zero credit on the main balance. Some AIS packages require a small base balance to function properly. It can be worth keeping at least THB 30 in your main account even if you are using a data bundle. If calls or SMS suddenly stop working despite having a data pack active, a low main balance is usually why.
Another mistake is waiting until you are completely out of data before recharging. When your balance hits zero, you may not be able to receive the confirmation SMS if you are relying on data-only services. Buy your top-up before you run dry, or connect to Wi-Fi while you redeem the code so you can still access your email.
Finally, make sure you are entering the code correctly. Thai recharge codes are long, and a mistyped digit will simply fail without a clear error message. Double-check against the email, and if it still does not work, forward that email to support@blinkcodes.com with your AIS number so we can help you sort it out.
Keeping your Thai number alive
AIS prepaid numbers can expire if left unused for an extended period. You lose the number entirely along with any remaining balance. Topping up periodically keeps the SIM active and your number yours. If you travel to Thailand regularly, adding a small credit amount every few months is a cheap way to avoid reactivation headaches on your next trip.
For most travelers, a single data pack plus a small credit buffer is enough to stay connected from the moment the plane lands until the flight home. Pick the denomination that matches your trip length, follow the steps above, and you should be online within minutes of receiving your code.