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Best Koh Samui Connectivity Solutions

Discover 36 Wi-Fi & SIM cards in Koh Samui on Trip.com, updated January 4, 2026, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From EUR 0.18 per person, with an average total of EUR 1.59. Choose the option that suits your plan.

With 23.444k verified reviews, Wi-Fi & SIM cards Koh Samui boast an average rating of 4.6.

This week's most popular Wi-Fi & SIM cards: "Global (66 countries) | 5G/4G eSIM | Total Package | 24H Billing | 1-7 days | QR code", with 3.826k reviews and a 4.5 rating.

The next available day tour departs on January 5, 2026. Book now to secure your spot!

Koh Samui Wi-Fi & SIM cards usually take about 1 hours — perfect for a relaxed, immersive experience!

January is perfect for visiting Koh Samui! Choose from Wi-Fi & SIM cards 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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36 results for Koh Samui Wi-Fi & SIM cards

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Reviews/Trip Moments

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Reviews: Thailand AIS 5G SIM Card | 35GB for 7days | Local Phone Number | Pick Up at Bangkok Airport
Guest User2025-10-20
It is easy to collect and the price was reasonable. The coverage and signal was strong too. Thanks Trip.
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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.
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Reviews: Thailand Dtac Truemove 5G eSIM | Total Data Package/Unlimited Data | 3-15 Days | 24-Hour Billing | QR Code
Guest User2025-10-24
Signal was super strong! This is my go to sim card for my thai trips as DTAC network is the best way to go
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Reviews: Thailand AIS 5G eSIM | Total 30GB/35GB | Local Phone Number | Real-Name Authentication Required | QR code
Guest User2025-10-24
AISeSim is my go-to telco in Thailand, and it's the largest telco in the country. You have to register your real name before you can use the eSim. The internet speed was smooth and seamless in Pattaya and Bangkok, with only the elevators losing signal. I was originally planning to book this trip on Agoda, but they only had a 7-day plan, so I booked on Trip.com, but the plan was 10 days. I felt like I was wasting money, but it was actually okay.
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Reviews: Global (66 countries) | 4G/5G eSIM | Total Package | 1-7 days | 24H Billing | Real-Name Auth Required (Hong Kong & Taiwan) | QR code
Guest User2025-09-24
Coming to Japan alone is comfortable. No need to worry about communication. The signal is good, no cuts. Plus, you can watch many series. Calling the hotel, the signal is good. It's very good. Normally, I use roaming, so the internet runs out very quickly.
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Reviews: Thailand 5G eSIM | Day Pass/Total Data Package | 1–30 Days | 24-Hour Billing | QR Code
Guest User2025-10-25
Everything is great, it activated quickly, but on an iPhone it didn't work the first time, maybe due to restrictions in THAT COUNTRY. I tried with and without a VPN, but in the end everything worked out fine. In a pinch, you can activate the SIM card in Thailand on WiFi.

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