Top picks for Oi Wi-Fi & SIM cards

Discover 33 Wi-Fi & SIM cards in Oi on Trip.com, updated December 25, 2025, with experiences lasting from 1 to 2 hours. Find the perfect adventure for your day!

From EUR 0.10 per person, with an average total of EUR 1.32. Choose the option that suits your plan.

With 37.104k verified reviews, Wi-Fi & SIM cards Oi boast an average rating of 4.6.

This week's most popular Wi-Fi & 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 10.131k reviews and a 4.4 rating.

The next available day tour departs on December 26, 2025. Book now to secure your spot!

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

December is perfect for visiting Oi! Choose from Wi-Fi & SIM cards available day tours, including seasonal hits 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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33 results for Oi Wi-Fi & SIM cards

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Reviews/Trip Moments

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.
Reviews: Japan SoftBank 4G/5G eSIM | TikTok & ChatGPT Available | 24-Hour Billing | 1-30 Days | QR Code
Guest User2025-12-06
The internet is okay, but the signal is weak in some areas in Kyoto. We bought 2GB per day, but it wasn't enough. Every day, it runs out at 5 PM. After it runs out, it's incredibly slow, making it almost impossible to do anything. If you're using it a lot to browse maps, use Instagram or TikTok, I recommend 5GB per day. It's better to have some extra than not enough, because it can be really difficult to search without internet.
Reviews: Japan 5G eSIM | TikTok & ChatGPT Available | Day Pass/Total Data Package | 24-Hour 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.
Reviews: [Japan] Mobile WiFi Rental-Pick-up/Return at Airport
Guest User2025-12-07
I really enjoyed using this Wi-Fi. I don't have the option to connect an eSIM card on my phone, so I started looking for another way and am glad I found this one. It's very convenient. I took it to Tokyo and returned it to Osaka. I stayed in touch with my relatives in Russia the whole time. I don't have to switch numbers; I can access everything from my Russian number. The device itself is small and lightweight, fits in a small handbag, and the charge lasted very well, all day long. The main thing is to remember to charge it in the evening. I always carried a power bank with me anyway. Although, once, both my phone and the power bank died completely, but the Wi-Fi still worked. Overall, I recommend it.
Reviews: Asia 9 Destinations 5G eSIM | Japan, Thailand, Vietnam, Indonesia, Korea & More | 1–30 Days | Instant QR
Guest User2025-11-24
Very useful worked perfectly pretty much everywhere, great coverage even in most remote zones, completely satisfied !
Reviews: Japan 5G local eSIM | DayPass | Unlimited | 4-15 days | QR code
Guest User2025-12-20
The eSIM I used during my trip was very affordable, especially after discounts and promo deals — it became incredibly cheap. I had zero issues using this eSIM throughout Japan. The connection was stable and reliable the whole time. I would definitely use this eSIM again on my next trip to Japan. Totally worth it. If you’re still unsure, don’t worry — this eSIM is one of the best choices you can make.
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