Top picks for Koh Samui SIM Card

Discover 34 SIM Card in Koh Samui on Trip.com, updated April 4, 2026, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From USD 0.21 per person, with an average total of USD 1.98. Choose the option that suits your plan.

With 18.78k verified reviews, SIM Card Koh Samui boast an average rating of 4.6.

This week's most popular SIM Card: "Thailand AIS 5G eSIM | Total 15GB/30GB | 7-10 Days | Local Phone Number | Real-Name Authentication Required | QR code", with 3.162k reviews and a 4.4 rating.

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

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

April is the perfect time to visit Koh Samui! Choose from SIM Card available day tours, including seasonal favorites like Thailand AIS 5G eSIM | Total 15GB/30GB | 7-10 Days | Local Phone Number | Real-Name Authentication Required | 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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Reviews/Trip Moments

Reviews: Thailand AIS 5G SIM Card | 15GB for 7days | Local Phone Number | Pick Up at Bangkok Airport
Guest User2025-12-25
I highly recommend buying it, everyone. This is my first time using AIS and I was amazed by its power. Normally, when I go to concerts in the hall, I lose my internet connection completely, or it's intermittent (more often than not), but with AIS it's very powerful, uploading photos and videos is smooth. If you go to Suvarnabhumi, buy a physical SIM card; the staff will set it up for you. Otherwise, you can buy an eSIM for convenience.
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 5G eSIM | Total 15GB/50GB/Unlimited Data | Local Phone Number | 7-15 Days | 24-Hour Billing | QR Code
Guest User2025-12-25
Excellent e-SIM, you can easily choose a plan. Internet and signal are excellent, coverage is everywhere. Activation on an iPhone via QR code or the Trip app itself is instant, I definitely recommend it. The price is better than in Thailand, unless you try to buy from Seven, but Thais rarely sell cheap SIM cards there.
Reviews: Thailand AIS 5G eSIM | Total 15GB/30GB | 7-10 Days | Local Phone Number | Real-Name Authentication Required | QR code
Guest User2025-12-25
We bought an eSIM before our trip to Thailand and couldn't be happier! We activated the service in advance, arrived at Phuket airport, and the internet was working right away, without any delays or hassle. Reliable connection everywhere. Now we can use the internet all over the island without any problems: at the hotel, on the beach, on public transport—the speed is stable, the coverage is excellent. Even in remote areas, the signal is reliable, which is ideal for a family with a child. A bonus—we also received a local number and a Thai mobile number, so we can sometimes call each other without extra charges—it's convenient and affordable. Of course, the internet is what we mostly use: maps, chats, video—everything works. We recommend eSIM to all tourists in Thailand!
Reviews: Global (66 countries) | 5G/4G eSIM | Total Package | 24H Billing | 1-7 days | QR code
Guest User2025-11-13
Very friendly family run Homestay , close to walking street and the room is clean , walk thru alley and no cars pass by but accessible with motorcycle
Reviews: Southeast Asia (7 countries) | 5G/4G eSIM | Day Pass/Total Package | 24H Billing | 1-30 days | QR code
Guest User2025-11-29
Easy to install. Convenient to use. Good signal. Works well even in many places. There is a link to check how much you have used. Recommended. No need to put in a SIM card, it's a hassle.