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TL;DR: First-time Ubigi buyers can use code MASHABLEJP15 to snag a 15-day unlimited Japan eSIM data plan for $33.15, down from $39. It gives you high-speed 4G/5G coverage on Japan’s top networks without traditional roaming fees.
Save 15% with code MASHABLEJP15 to get 15 days of unlimited 4G/5G data on Japan’s top networks for just $33.15.
Planning a trip to Japan means getting ready for incredible food, endless sightseeing, and navigating some of the busiest train networks on the planet. But whether you are looking up train routes, translating menus, or uploading photos on the fly, relying on your home carrier’s daily international roaming fees can get expensive.
If you want a fast, hassle-free cellular connection the second your plane touches down, Ubigi offers a dead-simple way to stay connected on a budget. Right now, first-time Ubigi buyers can use the exclusive promo code MASHABLEJP15 at checkout to take 15% off unlimited Japan travel data plans.
Ubigi is a digital travel data provider that uses eSIM technology instead of physical plastic SIM cards. It is a data-only service, so you use internet-based apps like WhatsApp, FaceTime, or iMessage to communicate rather than traditional voice calls.
Setting it up is simple: you buy a plan, receive a QR code via email, and scan it with your phone to install the profile. You just install the eSIM on your device once, and you can reuse it across more than 200 destinations worldwide without ever needing to scan a new code.
Instead of routing your internet connection through spotty third-party servers, Ubigi gives you direct access to Japan’s premier mobile networks. The 15% discount code MASHABLEJP15 works on all unlimited Japan options, but the 15-day tier hits the absolute sweet spot for standard vacations:
Mashable Deals
Key features
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Unrestricted tethering — You can freely use your phone as a mobile hotspot to share high-speed data with your laptop, tablet, or travel partner without hidden throttling penalties.
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Offline app top-ups — If you need to buy extra days or tweak your plan while out and about, the Ubigi app lets you manage and top up your account even if you run out of data or do not have an active WiFi signal.
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Dual SIM convenience — Your main home phone line stays in your phone, so you do not have to worry about losing tiny physical cards during your flight.
Before you buy, make sure your smartphone or tablet is unlocked by your home carrier and supports eSIM technology. Once you receive your QR code by email, you can install the eSIM at home and activate the plan right before you depart, so your high-speed connection kicks in automatically the moment you land in Japan.
Grab your 15% discount with code MASHABLEJP15 before your trip and stay connected the second your flight hits the tarmac.
