What your phone has to do at camp, how much data to buy for a week to three months, and two Thailand eSIMs you can install before you fly.
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Plan sizes from airalo.com/thailand-esim and yesim.app/country/thailand, checked 28 September 2026. No prices here: they show on the partner page in your currency and change with promos.
Most of it happens in your first hour in Thailand, before you find Wi-Fi.
Pick your camp length (we start from your camp plan's, if you have one) and see which plan size fits.
How long is your camp?
No camp plan yet? Start one and this guide will use its length.
2 weeks: about 10 GB of data on our rule of thumb, or unlimited if you film training or run a hotspot.
Airalo
Fixed lengths from 3 to 30 days, unlimited or fixed data.
Yesim
Fixed data valid 30 days, or unlimited priced by the number of days.
Plan sizes as listed on the partner pages on 28 September 2026. Prices show there in your currency and change with promos.
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As listed on airalo.com/thailand-esim and yesim.app/country/thailand on 28 September 2026. Both are data-only Thailand eSIMs.
We leave prices out on purpose: each partner shows them in your currency and runs promos. Open both pages for your length and compare.
Check your phone
It needs eSIM support and must be carrier-unlocked. Both partners have a compatibility check on their page.
Buy and install at home
Install on Wi-Fi a few days before the flight. Check on the plan page when your days start counting.
Keep your home line for SMS
Set the eSIM as your data line and keep your home SIM on for calls and bank codes. Turn data roaming on for the eSIM line only.
Switch on when you land
Book the Grab or Bolt from the arrivals hall with data already running. No SIM queue.
Fixed packages last up to 30 days. Top up in the partner's app before the first runs out, or, once you know where you live, get a Thai SIM at a phone shop (bring your passport). Over 30 days you also need a visa plan: read Thailand visa basics. Data is one line in the camp budget calculator, and the rest of your first week is in first time in Thailand (apps, cash, the ride from the airport).
Data sorted. Next: cover that names Muay Thai, and the gear to pack or buy in Thailand.
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You need mobile data from the airport: Grab or Bolt, maps, and messages to your gym and your room. An eSIM is the easy way: you install it at home and it works when you land. An airport SIM works too, but means a queue and your passport.
On our rule of thumb, about 10 GB covers maps, rides, messages and some social media when your room has Wi-Fi (about 20 GB for a month). If you film training, stream, or use a hotspot, take unlimited.
Both sell Thailand data eSIMs. Airalo lists fixed lengths from 3 to 30 days with unlimited or fixed data. Yesim lists fixed data valid 30 days, or unlimited priced by the number of days you pick. Compare the price for your length on each page.
Fixed packages last up to 30 days. Both partners offer top-ups in their app, so you can add the next month before the first runs out. For two or three months, a Thai SIM from a phone shop (passport needed) is the other option once you are settled.
Yes, on a phone that takes two lines: keep your home SIM on for calls and bank codes and use the eSIM for data. The plans in this guide are data only.
At home on Wi-Fi, a few days before you fly. Both partners tell you to install before the trip and connect when you arrive; check on the plan page when your days start counting.
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