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Top picks for Japan SIM Cards

Discover 36 SIM Cards in Japan on Trip.com, updated March 18, 2026, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From THB 3.64 per person, with an average total of THB 43.73. Choose the option that suits your plan.

With 75.212k verified reviews, SIM Cards Japan boast an average rating of 4.6.

This week's most popular SIM Cards: "Global (66 countries) | 4G/5G eSIM | Total Package | 1-7 days | 24H Billing | Real-Name Auth Required (Hong Kong & Taiwan) | QR code", with 18.39k reviews and a 4.4 rating.

The next available day tour departs on March 19, 2026. Book now to secure your spot!

Japan SIM Cards usually take about 1 hours — perfect for a relaxed, immersive experience!

March is the perfect time to visit Japan! Choose from SIM Cards available day tours, including seasonal favorites like Global (66 countries) | 4G/5G eSIM | Total Package | 1-7 days | 24H Billing | Real-Name Auth Required (Hong Kong & Taiwan) | 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

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Reviews: Japan | 5G 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.
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Reviews: Japan SoftBank 4G/5G eSIM | TikTok & ChatGPT Available | Day Pass/Total Data Package | 24-Hour Billing | QR Code
Guest User2026-03-17
Excellent SIM card! I installed it on my phone ahead of time, and upon arrival, it immediately found a network and connected. It worked without any interruptions or speed drops the entire time.
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Reviews: Japan 5G eSIM | TikTok & ChatGPT Available | Day Pass/Total Data Package | 24-Hour Billing | QR Code
Guest User2026-02-20
The signal is unstable. After watching videos for a while each day, the signal becomes extremely slow, and even mobile payment functions become unusable.
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Reviews: South Korea 5G eSIM | TikTok & ChatGPT Available | Day Pass/Total Data Package | 24-Hour Billing | 1-30 Days | QR Code
Guest User2026-03-17
I purchased a 4-night, 2GB daily plan. I used Wi-Fi at the accommodation. Outdoors, I used maps, web searches, Google Translate, and occasionally Instagram. The speed never slowed down, and it was very comfortable! I didn't use customer support this time, so I'm giving it an average rating.
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Reviews: South Korea 5G eSIM | Supports mainstream apps including TikTok, Google Maps & ChatGPT | Day Pass / Total Package | 1–30 Days | 24-Hour Billing | QR code
Guest User2026-03-17
Upon arriving in Busan, there was no Wi-Fi available to activate my eSIM right after disembarking, which made me a little nervous (because I needed to use Uber later). After clearing customs, I found Wi-Fi in the airport terminal, though the signal wasn't very stable, and I could activate my eSIM there. I spent five days in the west side of the airport, and while the signal was unstable for a few short periods, it was generally good. A friend suggested activating the eSIM while there's a Wi-Fi signal in Taiwan so it's usable upon arrival, but this might start the activation time earlier, so it's a matter of personal preference. I would definitely consider repurchasing it later.
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Reviews: South Korea SKT eSIM | Unlimited Data + 010 phone number | 1-90 days | 24-hour billing | QR code
Guest User2026-03-15
Registration was easy, and it worked without any problems! I chose this because I wanted a phone number, but because I arrived early in the morning, I couldn't complete the verification process, so I had to go to a manned counter to have it set up so I could receive messages! It didn't take long, and they did it right away, but be aware if you arrive before 8am and want to use it immediately!

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