Pocket WiFi in Japan: Rental Prices, SIM Cards and eSIM Compared for 2026

a week of unlimited pocket WiFi at Japan Wireless on 14 November 2026, about $62, shared by up to 8 devices

¥9,960

what a lost router costs without insurance at the four rental companies we checked, about $190 to $250

¥30,000 to ¥40,000

start of ID checks on data-only SIM cards in Japan, according to the Ministry of Internal Affairs and Communications

April 2027

A pocket WiFi in Japan costs about ¥7,000 to ¥11,000 for a week of unlimited data ($43 to $68), for one router that up to 8 or 15 devices share. That makes it the cheapest way to connect a family or a group of four, or anyone working on a laptop. If you travel alone or as a couple with a phone that takes an eSIM, a data eSIM is cheaper and simpler. A physical Japan SIM card is the answer for an unlocked phone without eSIM, or when you need a Japanese phone number. All prices below were read on each company's own site on 14 November 2026.

Is pocket WiFi worth it in Japan? Pocket WiFi vs eSIM vs SIM card by traveller

The choice comes down to how many people and devices need data, and what your phone accepts. Here is the honest answer for each case.

A pocket WiFi has three costs that never appear on the price tag. You carry and charge a second device all day, and the group has to stay within wifi range of whoever holds it. You collect it on arrival and post it back before security on the way home. And a lost router costs ¥30,000 to ¥40,000 without insurance. If those trade-offs do not suit you, an eSIM avoids all three. Its plans, networks and phone compatibility are covered in detail in our guide to the best eSIM for Japan. The short version is below.

Pocket WiFi Japan price vs eSIM and SIM card: 7 and 14 days, 1 or 4 people

The table compares what each option really costs for a week and for two weeks, for one traveller and for a group of four. A pocket WiFi is one router whatever the group size, while eSIMs and SIM cards are bought one per phone. Yen prices are converted at about ¥160 to the dollar.

For one person, a pocket WiFi is the most expensive option, about five times the price of a basic eSIM. For four people who stay together, it becomes the cheapest unlimited option: $13 to $24 each against $26.50 to $39.60 each for unlimited eSIMs. If your group splits up during the day, only the person with the router stays connected, so two routers or a mix of router and eSIMs is the safer plan. The b-mobile SIM adds ¥430 to ¥600 of delivery, and the eSIM prices are those of our eSIM comparison for Japan, read on the same day.

Best pocket WiFi rental in Japan: four companies compared

We read the rates, terms and fee tables of the four rental companies that come up most in searches for pocket WiFi in Japan. None of them is a partner of this site. Prices are as displayed on 14 November 2026. Sakura Mobile shows prices before 10% tax, and the other three do not say whether tax is included.

Japan Wireless: the cheapest two weeks of unlimited data

Japan Wireless sells a single plan, The ONE Plan, on SoftBank 4G. It states no fair usage cap and promises a credit on your rental if your speed is ever throttled by policy. Our quote from its rate calculator came to ¥9,960 for 7 days and ¥13,623 for 14 days ($62 and $85), and the price per day falls sharply with length: ¥17,308 for 21 days. The kit includes a free power bank, a USB cable and plug, a travel pouch and a prepaid return envelope. You can collect it at Narita, Haneda, Kansai, Chubu Centrair, Fukuoka and New Chitose, at its Shimbashi office in Tokyo, or have it sent to your hotel, home or office. It accepts orders less than 48 hours ahead, and a faulty router is replaced the same day for free.

Two inconsistencies on its own site are worth knowing. The home page says to return the router by noon the day after the rental ends, while the FAQ says 3 pm. Aim for noon. And the fee for a lost router is ¥40,000 in the rates table but ¥44,000 in the FAQ.

Sakura Mobile: longest battery and 15 devices

Sakura Mobile runs its pocket WiFi on docomo's 4G network, which has the widest rural coverage in Japan. The router connects up to 15 devices and its battery is rated at 20 hours, enough for a long day without a power bank. The simulator on its site gives ¥9,900 for 7 days and ¥18,300 for 14 days, which works out at about ¥10,890 and ¥20,130 once the 10% tax is added. The minimum rental is 4 days. Data is sold as unlimited, but the terms say plans follow the carrier's fair usage policy, without a published threshold. Sakura has counters at Narita, Haneda, Kansai and Fukuoka, a Shinjuku office open daily from 10 am to 5 pm, and delivers to hotels and post offices across Japan.

WiFi Rental Store: cheapest week, with extras to add

WiFi Rental Store, based in Akihabara, has the lowest headline prices: ¥6,930 for a week of unlimited docomo 5G with the FS050W router, or ¥2,730 for a week on a SoftBank router capped at 20 GB a month. The extras add up. Delivery and return cost ¥1,100, an airport pick-up adds ¥550, insurance is ¥550 per rental and a power bank ¥50 a day. That last one matters, because its routers last only 3 to 4 hours of continuous use. You can collect a router the same day at the Akihabara shop (9:30 am to 6:30 pm on weekdays, 11 am to 6 pm at weekends). For an airport counter you must order 2 days ahead before 5 pm Japan time, or 3 days ahead for New Chitose, Fukuoka and Naha. It notes limited stock in July and August.

Ninja WiFi: daily data caps and a 5G docomo router

Ninja WiFi lets you pick a daily allowance on SoftBank: ¥440 a day for 1 GB, ¥770 for 3 GB, ¥1,100 for 5 GB and ¥1,320 for 10 GB, with speed cut to 128 kbps once the day's data is used. Its Infinite Unlimited plan is listed at ¥1,980 a day, and the docomo 5G U50 router at ¥2,200 a day. These are the rates printed on its plan page. The site showed no total for a 7 or 14-day rental, so we cannot confirm whether longer rentals get a lower rate. Insurance runs from ¥220 to ¥440 a day. Pick-up is at Narita, Haneda, Kansai, Naha and Fukuoka if you order before 4 pm Japan time the day before, and cancellation is free up to 4 days before departure.

Mobal: a pocket WiFi you buy, not rent

Mobal sells its router for ¥6,980, then a monthly plan of 100 GB (¥4,980), 200 GB (¥5,980) or 300 GB (¥6,980), with no minimum contract and nothing to return. It connects 8 devices. For a two-week trip it costs more than a rental. It becomes interesting for a stay of several months, a working holiday in Japan for example, before you have a Japanese contract.

Is unlimited pocket WiFi in Japan really unlimited? Throttling rules

"Unlimited" on a Japanese router usually means no hard cap, with a fair usage policy that lets the carrier slow you down after heavy use. Only some companies publish the threshold. For normal travel use (maps, messaging, social media and some video, often 1 to 3 GB a day), none of these limits will touch you. They matter for remote work, video calls all day or large uploads.

For 5G pocket WiFi in Japan, the two options we found are WiFi Rental Store's docomo FS050W (up to 2.8 Gbps in 5G areas) and Ninja WiFi's docomo U50. 5G covers city centres well, but on most of the Shinkansen line and in the countryside you will be on 4G anyway.

Pocket WiFi pick-up at Narita, Haneda and Kansai airports, or hotel delivery

You book online, pay by card and choose where to collect. At an airport, you show your passport and booking email at the counter of the company or of its delivery partner (JAL ABC at most terminals). Counter hours matter if you land late. These are the hours published by Sakura Mobile and WiFi Rental Store, the two companies that list them.

If you land after the counter closes, or at Narita Terminal 3 with a low-cost carrier, hotel delivery is the easier option. All four companies deliver to hotels: the parcel waits at reception under the name of the guest who checks in, so book under that exact name. Japan Wireless and Sakura Mobile also deliver to a private residence if you give its name and room number. Remember that the rental is counted in calendar days from the day of delivery, not from the day you start using it, so a router delivered the day before you land costs one extra day. For your first hours in Tokyo, our guide to things to do in Tokyo shows where you will want maps and translation most.

Returning a pocket WiFi in Japan: post box, deadlines and late fees

Every company includes a prepaid return envelope. You put the router and its accessories inside and drop it in any red Japan Post box, at a post office or in a Lawson convenience store box. The deadline differs: 8 am the day after the rental ends at WiFi Rental Store, noon the next day at Japan Wireless, and midnight on the return date at Sakura Mobile.

Late returns and losses are where a rental gets expensive. These are the fees each company publishes. Without insurance, losing a router costs ¥30,000 to ¥40,000 ($190 to $250), more than a month of rental.

None of the four shows a deposit on its booking pages. If you change your plans mid-trip, Sakura Mobile and Ninja WiFi let you extend the rental online, which costs less than a late fee.

Japan SIM card: where to buy one and what it costs

A physical SIM card goes into the SIM tray of an unlocked phone. Almost all tourist SIMs are data only: no phone number, no calls, no SMS. You can order one online and collect it at the airport, or buy one on arrival from SIM vending machines and counters at Narita, Haneda and Kansai, and in electronics stores such as BIC Camera and Yodobashi. Prices in shops and machines vary by seller, so check them on the spot.

"Unlimited" SIMs have limits too. Sakura's 3 GB-a-day SIM slows to 1 Mbps after 3 GB until the next day. IIJmio's unlimited SIM caps tethering at 9 GB for 10 days, 14 GB for 15 days and 30 GB for 31 days, then drops to 128 kbps for shared devices. If you plan to share your phone's connection with a laptop, read that line before you buy.

Data-only SIM or a SIM with a Japanese phone number: the ID rules

Under Japan's law on the improper use of mobile phones, any SIM with voice service requires an identity check. That is why Mobal only sends its voice SIM to the address on your ID or hands it over against your passport, and why b-mobile simply tells visitors that you must live in Japan to have a phone line. According to the Ministry of Internal Affairs and Communications, data-only SIMs are outside the check today, but from April 2027 they will be covered too, including those bought by short-stay visitors, with the IC chip of the ID document read in principle. Some sellers already ask for a passport for data SIMs at their counters, so carry it when you collect one. A Japanese number is useful for restaurant bookings, deliveries and some apps that send codes by SMS. For most trips, it is not needed.

Which phones cannot take a Japan SIM card

Apple's own list, updated on 11 November 2026, settles a question that trips up many visitors. Every iPhone 14 and later sold in the US has no SIM tray, so a physical SIM is impossible: you need an eSIM or a pocket WiFi. The iPhone 17, 17 Pro, 17 Pro Max, 17e and 18 Pro have no SIM tray in the US, Canada, Mexico, Japan and several Gulf countries, but they do have one in the UK, Europe and Australia. The iPhone Air and iPhone Duo have no tray anywhere. Any phone bought on a carrier contract also has to be unlocked before it accepts a foreign SIM or eSIM. If it is locked, a pocket WiFi is the way round it.

Free wifi in Japan as a backup to pocket WiFi

Free wifi is easy to find in Japan but it will not replace a router or an eSIM. Hotels, large cafe chains, convenience stores and the main stations have it, and the Tokaido, Sanyo and Kyushu Shinkansen offer Shinkansen_Free_Wi-Fi, which you must reconnect every 30 minutes. The free Japan Wi-Fi auto-connect app joins partner hotspots without a new form each time. What it lacks is coverage in the street, where you need a map most. Our Japan eSIM guide covers the free networks in detail. Before you fly, also fill in Visit Japan Web for immigration and customs: the QR codes stay on your phone without any connection. Once you are online, our Suica card guide explains how to load a transit card on your phone, and our Japan itinerary shows which days you will spend on trains and in the countryside.