Wise and Revolut give you mid-market rates and 0% FX fees. Roughly ¥6,000 saved on a $1,500 trip. Order before you fly and you'll skip the counter queues entirely.
Bottom line: solo/duo → Airalo eSIM, group of 3+ or non-eSIM phone → Ninja WiFi. Full breakdown of cost, speed, and hassle (May 2026).
Airalo if you're solo or a pair, Ninja WiFi for groups of 3+ or older phones.
eSIM is one-per-phone but cheap and zero-hardware. Pocket WiFi shares one router across up to 5-10 devices but costs more per day. Solo for 1 week: Airalo 5 GB at $11 beats Ninja's ~$50/wk handily. Group of 3: Ninja split three ways works out to ~$15/person, beating 3× $11 Airalo eSIMs.
The more people you split it across, the better pocket WiFi looks
Bag weight + nightly charging is a real ongoing tax
Airalo 5 GB at $11 is unbeatable. Skip the router-carry chore entirely. Setup takes 5 minutes.
Ninja WiFi 14-day ≈ ¥11,200 split 4 ways = ¥2,800/person. Four eSIMs would run ~$44, similar dollars but managing one router is simpler than four separate eSIM installs.
Pocket WiFi connects PC + phone seamlessly. eSIM-tethering works but drains the phone battery fast on a working day.
Airalo 1 GB at $4.50 or 3 GB at $7 — done. Ninja's shortest plan still wastes spend for a 2-night stay.
iPhone X and earlier, some Android models can't use eSIM. Pocket WiFi is the obvious answer.
Buy Airalo in the app before you fly and your phone is online the moment you land. Ninja WiFi requires advance online booking and an airport-counter pickup — book 2-3 days ahead to lock in stock.
Mostly no — both ride a Japanese carrier (usually SoftBank) at 4G/5G. The difference is the pocket-WiFi router itself: cheaper models can be slower in congested cells (Shibuya at 6 pm, for example).
Major Japanese airport Ninja WiFi counters (HND, NRT, KIX, ITM, FUK, NGO, CTS). Choose pickup airport + date during the online booking. After-hours delivery to your hotel is available for ¥500-1,000 extra.
Airalo lets you install on one phone and tether to the second. Constant tethering drains the host phone fast, though — for a 2-person trip, two eSIMs at $11 each beat the tethering hassle.
Without insurance: Ninja charges ¥30,000+ to replace the device. Add the loss-protection option at pickup (~¥100-200/day) and you're covered.
No — Japanese aviation rules require it off during takeoff and landing. Carry it switched off, power on after landing for instant connectivity.
Data verified against Airalo and Ninja WiFi Japan pages, May 2026. Pricing varies by season and promotion — confirm on each partner's site before purchase.
Last verified: 2026-05-19