Best Koh Samui SIM Card & eSIM Plans

Discover 35 SIM card in Koh Samui on Trip.com, updated January 1, 2026, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From THB 6.59 per person, with an average total of THB 51.74. Choose the option that suits your plan.

With 23.955k verified reviews, SIM card Koh Samui boast an average rating of 4.6.

This week's most popular SIM card: "Global (66 countries) | 5G/4G eSIM | Total Package | 24H Billing | 1-7 days | QR code", with 4.061k reviews and a 4.5 rating.

The next available day tour departs on January 2, 2026. Book now to secure your spot!

Koh Samui SIM card usually take about 1 hours — perfect for a relaxed, immersive experience!

January is perfect for visiting Koh Samui! Choose from SIM card available day tours, including seasonal hits like Global (66 countries) | 5G/4G eSIM | Total Package | 24H Billing | 1-7 days | QR code.

Your trip, worry-free! All day tours are run by licensed suppliers with verified reviews, and many include free cancellation before departure.

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35 results for Koh Samui SIM card

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Reviews/Trip Moments

Reviews: Thailand AIS 5G SIM Card | 35GB for 7days | Local Phone Number | Pick Up at Bangkok Airport
Guest User2025-12-14
You can get this AIS SIM card at the AIS counter outside Exit B in the departure hall, between zones 7 and 8. You can also book it locally using TripAdvisor immediately after landing. This SIM card has 5G-4G speeds, fast enough even for Google Maps, and it's useful in many places.
Reviews: Thailand | 5G eSIM | Day Pass/Total Package | 24H Billing | 1-30 days | QR code
Guest User2025-08-25
Bangkok and Phuket sibeh crowded, sometimes the Wi-Fi will spin like sotong kena goreng. But if go ulu places with fewer people, the connection damn fast one.
Reviews: Thailand Dtac Truemove 5G eSIM | Total Data Package/Unlimited Data | 3-15 Days | 24-Hour Billing | QR Code
Guest User2025-12-11
Good eSIM including phone function. This allows you to continue using your German SIM for calls and SMS (backup call). Quick and easy setup.
Reviews: Thailand AIS 5G eSIM | Total 30GB/35GB | Local Phone Number | Real-Name Authentication Required | QR code
Guest User2025-12-13
This is an eSIM card that requires passport registration and login; its main function is probably for making calls. Having a phone is very convenient; you can use it to order food delivery or hail a ride using Grab locally. Since we forgot to register at the Taiwan airport, we found a small SIM card counter at the local airport, and the staff were very helpful in registering us. After registration, we could use the internet and make calls. During my trip to Bangkok and surrounding attractions, the internet connection was perfect, with no lag or buffering issues.
Reviews: Global (66 countries) | 5G/4G eSIM | Total Package | 24H Billing | 1-7 days | QR code
Guest User2025-12-13
Easy and fast to use. Able to survive 3 days while I bought 5 days data plan. Overall still good as I’m able to explore the city and took so many pictures.
Reviews: Thailand 5G eSIM | Day Pass/Total Data Package | 1–30 Days | 24-Hour Billing | QR Code
Guest User2025-12-14
Great support! They quickly addressed my activation issue and worked tirelessly to resolve it! I haven't had a chance to use it extensively yet, but so far so good!
Best Contact Center 2024 - Bronze
Best Contact Center 2024 - Bronze