Is pocket WiFi or an eSIM cheaper?

It depends how many phones you are feeding. One phone for a week: an eSIM at 2,480 to 5,775 yen wins against a rental starting at 3,080 yen for seven days at the 1GB a day rate. Four phones: one pocket WiFi at 770 yen a day is 5,390 yen for the week against four eSIMs at 2,480 yen each, or 9,920 yen.

How much is pocket WiFi rental in Japan?

Ninja WiFi prices by the daily data cap: 440 yen a day at 1GB, 770 at 3GB, 1,100 at 5GB, 1,320 at 10GB, and 1,980 a day with no cap on SoftBank, or 2,200 on the 5G plan. Sakura Mobile's unlimited router is 9,900 yen for seven days, and long rentals fall to about 329 yen a day. Japan Wireless quotes from about US$5.20 a day with no fair-use throttle.

Does the pocket WiFi throttle like an unlimited eSIM?

The capped plans do, by design: they are sold as a daily allowance and the speed is managed once you pass it. The uncapped plans do not. Japan Wireless states plainly that its plan has no fair-use throttle and credits the rental if policy throttling happens, and Ninja WiFi's Infinite plan is sold as uncapped at 1,980 yen a day.

Can I use a pocket WiFi with a laptop?

Yes, and that is its main advantage over an eSIM. A router carries several devices at once over its own wi-fi, so a laptop, a tablet and two phones share one connection. An eSIM's hotspot can do the same, but hotspot data is separately capped on many plans, such as 7GB on a 7-day Holafly plan or 6GB on a Sakura Mobile rental.

My phone came from Hong Kong. Can it use an eSIM?

Only if it is one of the models Apple lists as eSIM-capable in Hong Kong: the iPhone 18 Pro, 18 Pro Max, 17e, 17, Air, 17 Pro, 17 Pro Max, 16e, SE second and third generation, 13 mini, 12 mini and XS. The Hong Kong and Macao iPhone 16, 15, 14 and standard 13 use two physical nano-SIM trays with no eSIM hardware, so a data SIM or a pocket WiFi is the only route.

What happens if I lose the router?

You are charged for it. Every operator publishes a replacement charge and most take a deposit or card hold at collection, which is why photographing the kit and its pouch when you pick it up is worth the ten seconds. Return is usually by postbox, using the prepaid envelope in the kit.

Can the Chureito pagoda and Lake Kawaguchi be done in one day from Tokyo?

Yes, and they sit on the same railway line. The 07:30 Fuji Excursion from Shinjuku stops at Shimoyoshida at 09:13, which is the pagoda's station, and reaches Kawaguchiko at 09:28. The two stations are 310 yen and fifteen minutes apart, so the day is the pagoda in the morning, lunch by the lake, and the northern shore in the afternoon. The last express back to Shinjuku leaves Kawaguchiko at 17:41.

Which station do I get off at for the pagoda?

Shimoyoshida, on the Fujikyu line. The Fuji Excursion calls there, and so does every local train, so you do not have to ride to Kawaguchiko and come back. It is a ten-minute walk to the foot of the stairs, 398 steps up, and the city's own figure is twenty-five minutes on foot from the platform to the tower. Honcho street, the shopping street with the mountain at the end of it, is five minutes from the same platform on the other side.

Is the pagoda free, and does it close?

Sengen Park is free and open around the clock, with toilets on site. The observation deck was rebuilt in 2022 and looks over Fujiyoshida towards the mountain. From 17:00 to 21:50 in October and November the park is lit, but the last express leaves Kawaguchiko at 17:41, so the light-up belongs to a night at the lake rather than a day trip. If you drive, the four city car parks cost 1,000 to 1,500 yen for six hours; buses and microbuses cannot enter the street at all.

How much is the Lake Kawaguchi ropeway, and when does it shut?

A return ticket is 1,000 yen for adults and 500 yen for children, and it rises to 1,200 yen and 600 yen on 1 November 2026. The line runs 8:30 to 17:00 with the last car down at 17:20, and to 18:00 from 20 July to 31 August. From 1 December to 28 February the last car up is 16:20. The swing and the lookout tower beside the summit station open 9:30 to 16:00 and close in rain or wind.

Do I need the bus day pass?

The one-day pass is 1,500 yen for adults and 750 yen for children, 2,000 yen for two days, and single rides start at 180 yen. It covers the red line, which runs from Kawaguchiko Station to the ropeway entrance in 11 minutes and to Oishi Park in 27. The pass turns on the third ride, so it pays for the ropeway and the lake in one afternoon. It is sold at the station window and on the bus itself, one-day tickets only.

What happens if the mountain is in cloud?

The pagoda is the safer half of the day, because the deck looks over the town whatever the summit is doing, and the morning is the clearest part of it. The ropeway publishes a live camera and the day's operating notices at the top of its own site, so check before you ride the bus out. Strong wind stops the gondola altogether, and then the deck at Sengen Park is the fallback rather than the summit.

Train or bus from Tokyo?

The Fuji Excursion is 4,010 yen to Shimoyoshida and 4,200 yen to Kawaguchiko, all seats reserved, four round trips a day, and it never sits in traffic. The highway coach is about 1 hour 45 minutes for 2,200 yen at the counter or 2,000 yen booked online, also reserved, and it stops at Chuo-do Shimoyoshida, five minutes on foot from the station. Its weakness is the way home: the Chuo Expressway into Tokyo on a Sunday afternoon is a queue.

Pocket WiFi, eSIM or a SIM in 2026: one table decides it

Q: Where do I collect a pocket WiFi at the airport?

At a counter: Ninja WiFi at Narita Terminals 1 and 2, Haneda Terminals 2 and 3, Kansai Terminals 1 and 2, Naha and Fukuoka; Sakura Mobile at Narita, Haneda, Kansai, Fukuoka and New Chitose; Japan Wireless at those plus Chubu Centrair. Apply by 16:00 Japan time the day before for a next-day pickup, and match the counter's hours to your arrival time.

A pocket WiFi router and a phone on a cafe table — One router, four phones.

Three ways to put data on a phone in Japan, and the bill works differently for each. An eSIM is bought per phone and never runs flat. A pocket WiFi is rented per day and splits the cost across everyone carrying a device. A physical SIM sits in between. The rental counters and the daily caps decide which one you want, and so does whether you're travelling alone.

In one line Two or more phones and one shared bill: rent a pocket WiFi, at 440 to 2,200 yen a day depending on the daily cap. One phone: buy an eSIM once, at roughly 2,500 to 5,800 yen for the week, and skip the counter queue and the second device to charge. A phone bought in mainland China or Hong Kong that has no eSIM hardware takes the physical SIM.

¥440: Daily rate with the tightest cap1GB a day, SoftBank
¥1,980: Uncapped daily rateNinja WiFi, no data cap
4: Airports with a rental counterPlus Naha and Fukuoka
16:00: Apply by, for next-day pickupThe day before you fly

1The 2026 options on one table

	Pocket WiFi	eSIM	Physical SIM
Paid per	Day, per device	Phone	Phone
Shares with	Everyone in the group	Nobody	Nobody
Cost, one week	¥3,080–¥13,860	¥2,480–¥5,775	¥1,584–¥11,088
Carry	A second device to charge	Nothing	Nothing extra
Collect	Airport counter or post	Download at home	Airport counter or shop
Return	Postbox or counter	Delete it	Keep it
Needs	An unlocked phone, nothing else	eSIM hardware	An unlocked SIM slot

The rental price moves with the daily cap, not with the length of the trip. Ninja WiFi's capped tiers run ¥440 a day at 1GB, ¥770 at 3GB, ¥1,100 at 5GB and ¥1,320 at 10GB, and its uncapped SoftBank plan is ¥1,980 a day, with a 5G version at ¥2,200. Sakura Mobile's unlimited pocket WiFi is ¥9,900 for seven days, and longer rentals drop to about ¥329 a day. Japan Wireless sells its own unlimited plan from about US$5.20 a day and states there's no fair-use throttle at all.

2Where the 2026 router goes flat and the eSIM doesn't

A pocket WiFi is one battery serving four phones, and it's the only thing on this page you have to remember to charge. Rentals come with a cable and usually a power bank, and And the honest way to plan a long day is to treat the router as a fifth device: charge it at lunch, or carry the power bank. Two of the uncapped plans quote 8–12 hours of use, which is a day out in Kyoto with a stop at a cafe.

An eSIM has no battery of its own, which is the whole argument for it on a solo trip: no device to charge, nothing to hand back, no deposit. Its cost is that it serves one phone. A family of four buys four plans, and that's when renting starts to win on price.

3Collecting and returning it in 2026

Ninja WiFi runs counters at Narita Terminals 1 and 2, Haneda Terminals 2 and 3, and Kansai Terminals 1 and 2, plus Naha and Fukuoka. Sakura Mobile hands over at Narita, Haneda, Kansai, Fukuoka and New Chitose. Japan Wireless covers Narita, Haneda, Kansai, Chubu Centrair, Fukuoka and New Chitose. Apply by 16:00 Japan time the day before for a next-day counter pickup, and check the counter's own opening hours against a late arrival.

Rental desk	What you get	Reserve
Klook pocket WiFi	Unlimited 4G units collected at the airport counter, one order covering the whole group	Klook
KKday pocket WiFi	The same operators' routers sold through KKday, including the 3GB-a-day tier	KKday
Trip.com pocket WiFi	The router options Trip.com lists for Japan, collected at the airport like the rest	Trip.com

Return is by postbox for most operators, which means posting the router before your flight rather than queueing at the counter on the way home. Every operator charges for a missing or damaged unit, so photograph the kit when you collect it.

4The physical SIM, and the 2026 phones that need one

A prepaid data SIM works in any unlocked phone with a free slot, and the tourist SIM market sits close to the pocket WiFi market in price: Ninja WiFi's SoftBank data SIMs run ¥1,584 for 1GB to ¥11,088 for 15 days uncapped, and IIJmio's Japan Travel SIM covers 3GB for ¥2,480 up to 55GB for ¥5,780 over 30 days.

This is the option to take if the phone can't install an eSIM. Apple sells several models in Hong Kong and Macao with two physical nano-SIM slots and no eSIM hardware, the iPhone 16, 15, 14 and the standard 13 among them, and almost every mainland-China iPhone since the XS is the same. Those phones need a card, or a pocket WiFi, and no amount of app shopping changes it.

5What I would do

Alone or as a pair, buy an eSIM and put the rental queue out of your trip. But three phones or more, rent a pocket WiFi weekday by weekday and split the bill: ¥770 a day for four people is under ¥200 each, which nothing else on this page reaches. If the phone is a Hong Kong or mainland China iPhone without eSIM hardware, buy a data SIM and skip the argument.

The full price list and the throttle figures behind each seller are in Japan eSIM in 2026.

Keep reading

A traveller checking a phone beside a train window

Japan eSIM in 2026: what a week costs and the network behind it

Suica cards fanned out on a plain surface

Suica, PASMO or ICOCA: which IC card to actually buy in 2026

Sources

Ninja WiFi — the rental and SIM pages (ninjawifi.com/en): the per-day tiers of ¥440 (1GB), ¥770 (3GB), ¥1,100 (5GB) and ¥1,320 (10GB), the uncapped Infinite plan at ¥1,980 a day and the 5G plan at ¥2,200, the eSIM ladder, the data SIM prices from ¥1,584, the airport counters at Narita, Haneda, Kansai, Naha and Fukuoka, and the 16:00 cut-off the day before.
Sakura Mobile — the pocket WiFi page: ¥9,900 for a 7-day unlimited rental on Docomo 4G, the ¥329-a-day long-rental rate, the pick-up airports and the postbox return.
Japan Wireless — the site's own unlimited pocket WiFi plan: from about US$5.20 a day, a stated absence of fair-use throttling with a rental credit if policy throttling occurs, and the seven pick-up airports.
IIJmio — the Japan Travel SIM range in card and eSIM form: ¥2,480 for 3GB through ¥5,780 for 55GB, valid 30 days on NTT Docomo 4G.
Apple — the eSIM support notes for Hong Kong and Macao (support.apple.com/en-hk/109322) and mainland China (support.apple.com/en-asia/123879), which name the models with no eSIM hardware.
Airalo, Ubigi, Holafly, Mobal and eSIMania — the seven-day plan prices and allowances used for the comparison in this guide, all read on 16 October 2026 and set out in full on the eSIM guide this page links to.
Where a figure is a from-price or a daily rate rather than a fixed total, this guide says so. The rental totals in the first table are the published daily rates multiplied by seven, before any long-rental discount.

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