Japan WirelessMobile Wi-Fi Rental, SIM Sales in Japan

Japanese English

Wi-Fi Rental

  • Can I use Skype, LINE, Kakao talk, Viber or other VoIPs?

    Yes, you can. You can talk with your friends, family in your country for free as long as you want!
  • Can I make or receive phone calls with Mobile-Wifi?

    No. You can use Mobile Wifi only for data usage. But you can use Skype and other VoIPs for alternative!
  • How is the battery life?

    Mobile WiFi router has a battery life of around 300 hours for standby, or 4-8hours for continuous communication. You can save the battery more for using “automatic wifi switching off system”. We also rent a mobile battery for free! You don’t have to worry about flat battery.
  • I’m a little bit worried about lost and damege for Mobile Wifi router…

    We recommend taking our insurance for damage/ loss of Mobile WiFi device (JPY30 per day). With no insurance, the compensation charge will be 30.000 yen, but with insurance, it will be 10,000 yen.

  • What’s the Wi-Fi coverage area?

    Please check here for the Y!mobile and au+WiMAX coverage area. Y!mobile 3G
    Y!mobile LTE
  • Do we receive an instruction manual with the rental Wi-Fi package?

    Yes, we include an instruction manual on how to connect to the Internet and how to solve malfunctions. If you have any troubles, please contact our customer service (cs@japan-wireless.com).

  • What does the rental Wi-Fi package include?

    All the package will include mobile Wi-Fi router, AC adapter, USB cable, extra battery, instruction paper, and pouch.
  • Can we extend the rental period?

    Yes, please contact our customer service (cs@japan-wireless.com). We will send you a payment request for the extension fee via E-mail. However, for any request received after delivery, we will charge additional 500 yen for the service and transaction fee.

  • Can we use the mobile Wi-Fi router outside Japan?

    We are sorry that our Wi-Fi routers are only be used inside Japan.
  • Can the mobile Wi-Fi router support iPhone, iPad and other smartphones and tablets made by overseas manufacturers?

    Yes, our mobile Wi-Fi routers support all the devices as long as they have a WiFi feature.

Prepaid SIM Card

  • Can I use Skype, LINE, Kakao talk, Viber or other VoIPs?

    Yes, you can. You can talk with your friends, family in your country through Skype or other VoIPs. But we recommend you unlimited Mobile-Wifi if youintended to talk long.
  • Can I make or receive phone call with prepaid SIMs?

    No. Prepaid SIMs are only for data usage. But you can use Skype or other VoIPs as an alternative!

  • Does every phone/device accepts your prepaid SIMs?

    Almost yes, as long as your device is SIM free. Please check the compatibility. In the case your phone didn’t accept our SIMs, you can return them for just 500 yen shipping fee.
  • Do I need to activate or do something to use a Prepaid SIMs?

    No you don’t need to activate SIMs. Pre-activated SIMs will be sent to you.You only need to do APN settings of your device which you intended to insert SIMs. See how to set APN Instructions of “How to setting” will be also provided with prepaid SIM card.
  • I’m using prepaid SIMs, and how can I know how much I used (how much I stll have)?

    You can check how much data traffic you used by downloading dedicated Apps beforehand, available both on Android and iPhone. We also can check it for you. Please email and ask us. However, this may take a few days (especially if during the weekend).
  • I almost used up 1GB in my prepaid SIM. Can I buy more GB (recharge)?

    We’re afraid but we can’t recharge your prepaid SIM. Please buy another SIM card. We recommned you to order before you used it up or buy 2 SIMs at first order if you intended to use more than 1GB, beacuse we need time to ship them (approx. 2days).
  • Can I buy 2 SIMs and use them one by one (more than 30days)?

    Yes, you can. The 30days valid period beggins when you used the SIM for the first time. You can use one SIM first and keep another SIM unless you use it though it is already activated.
  • Now I’m using your prepaid SIM, and has “NTT Docomo” on the display. But it doesn’t show any signal mark, is it normal?

    Yes, it is normal for data usage. You can use only data usage without problem, don’t worry about it.
  • What is the PIN code for SIMs?

    Initilized PIN code is 0000 for both PIN1 and PIN2, unless you’ve changed it.
  • Which kind of phones can support the prepaid SIM card?

    We support all phones as long as it is SIM unlocked (SIM free) model.
    But please be noticed that some of the following device may support our SIM card. About detail, please contact the manufacturer or the carrier of the phone.

    Country / Region Company Model
    World Wide BlackBerry BlackBerry
    Taiwan HTC HTC butterfly
    HTC HTC One
    Hong Kong HTC HTC butterfly
    HTC HTC One


  • I don’t have enough time to follow the regular ordering process. Is there any other way?

    Yes, please contact us ASAP. We will do our best to assist you. If you are in a hurry, you can also choose express delivery (500 yen) or super express delivery (1000 yen, only within Tokyo’s 23 wards).
  • How many days should I order prior to the pick-up date?

    We ask our customers to submit their orders at least 3 days before their wished pick-up date. If your pick-up date is in less than 3 days, please contact us directly. You can also choose express delivery (500 yen) or super express delivery (1000 yen, only within Tokyo’s 23 wards).
  • I’m already traveling in Japan, can I order now?

    Sure, you can. Please let us know about your itinerary. We will suggest where to pick-up and send you ASAP.
  • I’m now using Mobile-Wifi and want to extend my rental period. Is it possible?

    Yes. Please contact and tell us for how many days you want to extend. Then let us check if it is possible. We will send you a bill after that. The rates will be discounted as you rented straight days.

Price / Make Payment

  • I have to leave earlier than I planed, do I get any refund for the days I don’t use?

    Yes, we accept returns before the designated date. We will then refund the remaining days.
  • Do I need to have a Paypal account?

    No, you don’t need to have a Paypal account to make a payment. You can just pay with your VISA, AMMEX or Mastercard via Paypal.
  • I want to rent for more than 5 months, do you have a special discounted rate?

    Yes, please contact and ask us for a long-term rate. We will give you a good offer.
  • I want to cancel. How can I get a refund?

    Please cancel via contact form as soon as possible. We will send a refund to your credit account via Paypal within 10 days.


  • What time exactly can I get my ordered goods on pick-up date?

    The goods will be delivered a day before your pick-up date so that you will be able to use them from anytime on your pick-up date.
  • I want to pick-up my Mobile-Wifi/SIM at the airport, how can I get it?

    You can just go to the post office and show them your voucher and passport. It should take less than a minute.
  • My flight will arrive at night, is it possible to get my Mobile WiFi/SIM at the airport?

    You should check the business hours of the post office. If you are arriving less than 2 hours before the closing time, we strongly recommend you to get your Mobile WiFi or Prepaid SIM at the place where you will stay.
  • By when do I have to return my Mobile-Wifi?

    You have to drop your Mobile WiFi router in the post box, by noon of the next day of the end of rental period. If you are late to return, you will be charged. Please make sure that you can drop it by the time, or extend your rental date in advance.
  • I want to know whether I can use Express Delivery or Super Express Delivery service.

    You should contact us now, and we will tell you if you can use these services as quickly as possible.
  • Are you sure that I can drop off my Mobile WiFi anywhere in Japan?

    Yes, you can drop your Mobile WiFi in the post boxes anywhere in Japan.
  • I forgot to return my rental unit, and I have it here in my country. What can I do?

    Please contact us immediately. And send it to address below by ESM, Fedex, DHL or faster methods. We are sorry but we will have to charge you for the delayed period. Please wait for the new bill and make the payment. <>
  • Where can I drop my Mobile-Wifi? Where can I find post boxes?

    You can drop your Mobile-Wifi in post box, or maybe at your hotel. Post boxes are bilt to anywhere in subarb area especially near station. Convenience store “LAWSON” also has post box in the store. Or you can just ask hotel staff to post it. For serching the location of post boxes, use this site .site

Speed Restriction

  • I got your Prepaid SIM. How to set the APN on my device?

    The instruction paper “How to set APN” should have been provided with your prepaid SIM. Please check the package again. You can also find below how to set it up. Just open the settings on your device and enter the information.
    APN umobile.jp
    User umobile@umobile.jp
    Passward  umobile
    Certification type PAP or CHAP *If configurable 
    PDP Type IP *If necessary
  • I got your Mobile WiFi, how to connect?

    The instruction paper “How to connect” should have been provided with your Mobile WiFi device. Please check the package again. You can also find below how to set it up.
    Step1 Swich ON the WiFi feature of your device
    Step2 Switch ON Mobile-Wifi
    Step3 Find the signal name shown on the instruction paper (ex, GP02-XXXXXX)
    Step4 Enter WEP key or WPA key hown on the instruction paper


  • My Mobile WiFi is lost or stolen , what should I do?

    Please let us know ASAP. We can also send you new a device if you wish. We hightly recommend you to go to police station and get police report so that your insurance company will pay you for compansasion charge.
  • I couldn’t get my Mobile WiFi & SIM at the airport, what can I do?

    Please call or email us immediately. We will deliver a new package to another destination in exchange of a re-shipping fee of JPY 1,000. Please let us know your hotel or accommodation address within 3 days. After confirming your accommodation information and receipt of payment, a new package will be shipped.


  • (日本語) サービスエリアは、Y!Mobile(旧EMOBILE)、WiMAXやauが公式HPで発表しているエリアと同じですか?

    Sorry, this entry is only available in Japanese.

  • Why do you offer at lowest price compared to the other companies?

    Our managerial effort made it possible. Some companies or indivisuals provide same business just as a subsidiary industry, but this is speciality for us.
  • I’m going to climb Mt-Fuji, will I still be on line with your Mobile-Wifi?

    I’m afraid not on the top. But you can be on line till the starting point of trail up Mt-Fuji (approx. 2300m altitude).

Easy Return by Mail
Order Now