AlpineSIM eSIM Japan 2026: Promo Code, Data Plans & Prices

Yes. Use our code ESIMSPOTTER when you buy a Japan plan. It takes 10% off. Enter it at checkout.

The cheapest AlpineSIM for Japan costs $0.29 and gives you 100 MB for 7 days. We recheck prices daily, so this price is up to date. You can buy it on the official AlpineSIM site.

Yes, AlpineSIM works in Japan on its Japan-only plans and on its regional and global eSIMs. If your eSIM is installed but won't connect after you land, open your phone's settings and turn on data roaming for it. Your home SIM can stay as it is.

For Japan alone, these are AlpineSIM's lowest prices by trip length:

• 7 days: $0.29 for 100 MB
• 15 days: $1.74 for 2 GB
• 30 days: $2.63 for 3 GB

Yes, AlpineSIM has 48 unlimited plans for Japan, ranging from $0.69 for 1 day to $17.85 for 30 days. A week without a data cap costs $4.68. AlpineSIM's unlimited plans give you a set amount at full speed each day, up to 10 GB depending on the plan. After that the speed drops until the next daily reset, so check the plan details before you buy.

AlpineSIM is an eSIM store for travelers, with plans covering 204 destinations. If you want prices for other countries and the full verdict, read the AlpineSIM review.

With AlpineSIM, 1 GB in Japan can cost as little as $0.49, on the plan with 50 GB for 30 days.

Yes, every AlpineSIM plan for Japan has 5G. Your phone needs to support 5G too: on iPhone, that means an iPhone 12 or newer.

Yes, you can share your data through a personal hotspot, and connected devices use the same allowance. AlpineSIM marks the few plans where the carrier doesn't allow it. On unlimited plans, shared data counts toward the same daily full-speed allowance.

No, AlpineSIM's Japan plans are data only, so your home number stays on your main SIM. You can still call and message people through WhatsApp or other apps.

Yes, you can install it at home and travel whenever you like. The days start counting only once the eSIM connects to a network in Japan. Some plans must be activated within a set number of months, so check the plan details before you buy.

Yes, when compatible add-ons exist for your eSIM, you can add data in the AlpineSIM app or in Manage eSIM on the website, and it goes onto the same eSIM. Check the plan details before you buy.

Yes, AlpineSIM has 199 regional plans that cover Japan and other countries, plus 29 global plans starting at $6.23. These keep you online as you cross borders. But if you're only going to Japan, a Japan-only plan costs less. For example, 10 GB for 30 days is $6.83 on the Japan eSIM and $10.96 on the regional one.