Pocket WiFi used to be the default way to get online in Japan. It still has a place — but for most solo and couple travelers in 2026, an eSIM is cheaper, simpler, and one less thing to carry. Here's the honest comparison, including the costs the rental sites bury below the headline rate.
(Rental prices below are typical 2026 ranges; check the provider's final checkout total, not the advertised daily rate.)
The real cost of pocket WiFi
Rental sites advertise rates as low as a few hundred yen a day, but that headline number is almost always based on a 30-day rental. For an actual 1–2 week trip, the per-day rate is higher, and then the add-ons stack up:
- Base rental: roughly ¥400–1,200/day (~$3–8) depending on the data tier and how long you rent.
- Insurance: usually ¥200–300/day extra if you want damage/loss cover — and you'll want it, because losing the device costs real money.
- Delivery / return: shipping to your hotel or airport pickup, plus the return leg.
- Power bank: the device is a second battery to keep charged all day; many people rent one.
For a typical 7–14 day trip, the realistic all-in total lands somewhere around $27–130, not the ¥440/day you saw on the banner.
The cost of an eSIM
An eSIM is a flat, one-time price with no add-ons, no deposit, no return, and nothing to lose. For Japan:
- Japan 5 GB / 30 Days — $9.99 for a lighter week.
- Japan 10 GB / 30 Days — $14.99 — the common choice for 7–14 days.
- Japan 20 GB / 30 Days — $19.99 for heavy use or hotspotting.
No insurance, no delivery fee, no power bank, no returning a device at the airport when you're rushing for a flight. (Not sure how much data you need? Here's a breakdown.)
Where pocket WiFi still wins
This isn't one-sided. Pocket WiFi genuinely beats an eSIM in a few cases:
- Groups and families. One router shares across everyone's devices, so a family of four pays once instead of buying four eSIMs. This is the strongest case for renting.
- Phones that don't support eSIM. Older or some region-specific phones can't use an eSIM at all. (Check yours here.) A pocket WiFi works with anything that has WiFi.
- You want a separate battery-powered hotspot for a laptop and tablet without draining your phone.
Where the eSIM wins
For the common case — one or two travelers with eSIM-capable phones — the eSIM wins on nearly everything:
- Cheaper once you count the rental add-ons.
- Nothing to carry, charge, or return. Your phone is the device.
- Works the moment you land — no airport pickup counter, no shipping window.
- No deposit and nothing to lose. Drop a rented router in a river and you're paying for it.
The short answer
Solo traveler or a couple with modern phones: get an eSIM. It's cheaper all-in and far less hassle.
Family or group, or a phone without eSIM support: rent a pocket WiFi and share it.
If you go the eSIM route, install it at home before you fly — here's the 3-step setup.
Driftvoy is launching in September 2026 with full-speed Japan eSIM plans from $4.99 — no throttling, no daily caps. Join the waitlist for 10% off your first plan.