G4 Spec Information

Maximum
150Mbps downstream
Maximum
50Mbps upstream
  • It can be used in Japan and overseas!
    full speed performance
  • You can use translation function, tripadvisor and
    Google MAP!
  • It can also be used as a charger!
How much can I use 150 Mbps downstream?

Go to Web Site
5〜15Mbps
View Online Games
10〜30Mbps
Good quality videos(HD1080p)
10〜25Mbps
View Instagram
5〜20Mbps

*Note that the line speed may change depending on the radio wave conditions in the area or time zone.

Can be used in the world! Complete translation function!
Available in128countries
around the world!
Free wonderful translator included!
Japanese
21languages
  • Chinese
  • Cantonese
  • English
  • Korean
  • Arabic
  • Danish
  • Dutch
  • French
  • German
  • Italian
  • Polish
  • Russian
  • Spanish
  • Greek
  • Thailand
  • Portuguese
  • Finnish
  • Czech
  • Romanian
  • Swedish
  • Hungarian

Don't get lost in the field! Tripadvisor and GoogleMap!

It is the world's largest travel community site. A wealth of word-of-mouth from all over the world is posted every day, providing information and advice to help you understand the "popular spot" to go on your trip.

Travel the world with Google Maps from the world's largest search engine. It has a lot of useful and fun features, including Street View, 3D views, detailed route search and navigation, and the ability to search for walking routes in your campus.
It can be used as a smartphone charger of 3,600 mAh when I was busy!

In case of emergency during travel ...
"Oh! It's not charging enough!"
You can fully charge an iPhone X and a Samsung Galaxy.
With this one, you don't have to worry about running out of battery!
Terminal Function Details
terminal name G4
terminal manufacturer uCloudlink
Color Black
Dimensions 136*72.2*12mm
Display Without display
5.0HD
Weigh 188g
WiFi Protocol IEEE802.11b/g/n
Upstream Maximum 50Mbps
Downstream Maximum 150Mbps
Frequency band
(Including external SIM card)
LTE-FDD
Band:1/2/3/4/5/7/8/9/12/13/17/18/19/20/26/28
LTE-TDD Band:34/38/39/40/41(120M)
WCDMA Band:1/2/5/8
GSM:850/900/1800/1900 MHz
OS Android 7.1
Battery Capacity 3,900mAh
Continuous running time About 12 hours
CPU Spreadtrum SC9850K
RAM+ROM 1GB+8GB
GPS GPS/AGPS/GLONASS
Capable connecters Type-C
Mobile battery function With mobile battery function
SIM slot 1 : nanoSIM
The maximum number of connections Up to 5 devices
Accessories Tips manual
Micro USB cable
SIM pin
OTG cable
U2s Terminal Performance

Downstream
Maximum 150Mbps
Upstream
Maximum 50Mbps
  • Thin & sleek body design
  • 4G network connection,
    fast internet browsing
  • You can use it as it is without any procedure in Japan and overseas.
How much can I use 150 Mbps downstream?

Go to Web Site
5〜15Mbps
View Online Games
10〜30Mbps
Good quality videos(HD1080p)
10〜25Mbps
View Instagram
5〜20Mbps

*Note that the line speed may change depending on the radio wave conditions in the area or time zone.

4G line and can be used overseas!

In Japan, you can use 4G line quickly!
I use an LTE line that can be used
quickly in the subway or indoors.
You don't have to go through any procedure when you go abroad!
It's cheap in the industry!

The mission of Mugen Wi-Fi is to provide global wifi
at the lowest price in the industry.
By cutting advertising and personnel costs as much as possible,
we were able to achieve an overwhelming price.
3,Sufficient battery capacity of 3,500 mAh

Up to 12 o'clock battery life!
With a large capacity of 3,500 mAh,
there is no problem with daytime communication!
Terminal Function Details
terminal name U2s
terminal manufacturer uCloudlink
Color gray
Dimensions 127*65.7*14.2mm
Display Without display
-
Weigh 149g
WiFi Protocol IEEE802.11b/g/n
Upstream Maximum 50Mbps
Downstream Maximum 150Mbps
Frequency band
(Including external SIM card)
LTE-FDD Band:
1/2/3/4/5/7/8/9/12/13/17/18/19/20/26/28
LTE-TDD Band:34/38/39/40/41(200M)
WCDMA Band:1/2/5/8
GSM:850/900/1800/1900 MHz
OS -
Battery Capacity 3,500mAh
Continuous running time About 12 hours
CPU Spreadtrum SC9850K
RAM+ROM 1GB+8GB
GPS -
Capable connecters Micro USB
Mobile battery function Without mobile battery function
SIM slot 1 : microSIM
The maximum number of connections Up to 5 devices
Accessories Tips manual
Micro USB cable

  • Unlimited Data WiFi!
  • 3 carriers available!
  • Next month reservating plan available!
  • The cheapest monthly price even after 2 years!
  • The latest translator is available for free!
  • *(1)

    We provide sufficient data capacity in a general usage environment, but from the viewpoint of maintaining network quality and using radio waves fairly, we will stop communication or take measures to slow down the speed for users who communicate in a large capacity. Please refrain from using the following services. Please refrain from watching video content for long periods of time, playing online games for long periods of time, downloading large amounts of data, talking over the Internet for long periods of time, watching high resolution movies, or always connecting to multiple devices. If the above conditions are not met,the communication speed may be limited to approximately 384 Kbps for the purpose of maintaining network quality and fair use of radio waves. Please note that we will not issue any refund or exchange in case of suspension or speed limit depending on the usage. In addition, if there is a suspicion of illegal downloading or illegal use, the use of the terminal itself may be suspended.

  • *(2)

    Using abroad would be extra charge

  • *(3)

    We will ship it within that day if you order before 8 am on weekdays, but it may depend on congestions. On a weekends
    we will ship it next day.

  • *(4)

    This is monthly price of ordering from U2s.

3,280 JPY monthly (Tax not included)

Great support 30 day trial

Full
refund
campaign

Details about 30 day trial full refund campaign

* 1,000 JPY
would be subtracted as a refund fee

4 of "FREE"

01Unlimited Data! *(1)

You don't have to worry about running out of data and not be able to surf Instagram! Surf smoothly even in the subway or buildings with 3 day no speed limitation !



02Usable in abroad with
Triple-Carrier!

You can use the connection of the major carrier
which has the largest area in Japan
without any procedure overseas!

03Free Device! Free shipping!

The device is completely free!
Fastest shipping within a day! *(2)
We ship all over Japan and of course the shipping is free!

043 day no speed limitation with
strong connection of 4G!

*(1) There is no speed limitation such as 10GB for 3 day!
Also we provide you LTE which is very connective, so you have nothing to worry about when you use our WiFi Router!

  • *(1)

    We provide sufficient data capacity in a general usage environment, but from the viewpoint of maintaining network quality and using radio waves fairly, we will stop communication or take measures to slow down the speed for users who communicate in a large capacity. Please refrain from using the following services. Please refrain from watching video content for long periods of time, playing online games for long periods of time, downloading large amounts of data, talking over the Internet for long periods of time, watching high resolution movies, or always connecting to multiple devices. If the above conditions are not met, the communication speed may be limited to approximately 384 Kbps for the purpose of maintaining network quality and fair use of radio waves. Please note that we will not issue any refund or exchange in case of suspension or speed limit depending on the usage. In addition, if there is a suspicion of illegal downloading or illegal use, the use of the terminal itself may be suspended.

  • *(2)

    Using abroad would be extra charge

3,280 JPY monthly (Tax not included)

Easy 3steps

STEP01
Fastest Shipping from the Web
STEP02
No construction required to get your device
STEP03
Individual easy set-up for each devices

Plans

2 plans available for your use

  • Also want to
    use translator!
    MUGEN
    Advanced Plan
  • Want to use a
    lot on abroad!
    MUGEN
    Cheap Plan
Advanced Plan
Forever from your first month
3,880 JPY monthly (Tax not included)
Cheap Plan with
Translator + Charging function
G4
Device
Maximum 150Mbps downstream
Maximum 50Mbps upstream
The maximum number of connections
Up to 5 devices
Battery 3,900mAh
Weight 188g

Caution

*Additional transaction fee will be added

About the speed limitation
  • *(1)

    We provide sufficient data capacity in a general usage environment, but from the viewpoint of maintaining network quality and using radio waves fairly, we will stop communication or take measures to slow down the speed for users who communicate in a large capacity. Please refrain from using the following services. Please refrain from watching video content for long periods of time, playing online games for long periods of time, downloading large amounts of data, talking over the Internet for long periods of time, watching high resolution movies, or always connecting to multiple devices. If the above conditions are not met, the communication speed may be limited to approximately 384 Kbps for the purpose of maintaining network quality and fair use of radio waves. Please note that we will not issue any refund or exchange in case of suspension or speed limit depending on the usage. In addition, if there is a suspicion of illegal downloading or illegal use, the use of the terminal itself may be suspended.

  • *(2)

    It's available with 4G witihin Japan. There might be low connection inside the building or radio tower.

  • *(3)

    Using abroad would be extra charge

Cheap Plan
Forever from your first month
3,280JPY monthly (Tax not included)
It's the best plan for those people
who wants to save money abroad
U2s
Device
Maximum 150Mbps downstream
Maximum 50Mbps upstream
The maximum number of connections
Up to 5 devices
Battery 3,500mAh
Weight 149g

Caution

*Additional transaction fee will be added

About the speed limitation
  • *(1)

    We provide sufficient data capacity in a general usage environment, but from the viewpoint of maintaining network quality and using radio waves fairly, we will stop communication or take measures to slow down the speed for users who communicate in a large capacity. Please refrain from using the following services. Please refrain from watching video content for long periods of time, playing online games for long periods of time, downloading large amounts of data, talking over the Internet for long periods of time, watching high resolution movies, or always connecting to multiple devices. If the above conditions are not met, the communication speed may be limited to approximately 384 Kbps for the purpose of maintaining network quality and fair use of radio waves. Please note that we will not issue any refund or exchange in case of suspension or speed limit depending on the usage. In addition, if there is a suspicion of illegal downloading or illegal use, the use of the terminal itself may be suspended.

  • *(2)

    It's available with 4G witihin Japan. There might be low connection inside the building or radio tower.

  • *(3)

    Using abroad would be extra charge

Period of use (2 Years)No contract restriction, be free

The latest devices comes up every year.
Have you ever been frustrated with high penalty fees because you couldn't cancel the contract during the limited period? Mugen Wi-Fi is a great way to keep up with the progress of devices in just one year.

30 daysTrial Period
Device subscripting month
One to secoond monthThere is penalty fee
Second month 24th month
Contract expiration month
After third yearNo penalty fee!
25th month
Contract expiration month
There is no contraction fee required after 25th month
  • ※(1) We charge you 1000 JPY + Shipping for returning fee as a 30 day trial campaign.

About penalty fee
  • Less than 1 year : 9000 JYP (Tax not included)
  • Less than 1 to 2 years : 5000 JPY (Tax not included)
  • After contaction period : 0 JPY (Tax not included)
  • Your contraction month would be your first month and contraction update would be your 25th months.
  • If the contract is within 24 months, you need to return the terminal. After that, you don't need to return it. * If you do not return the handset, there will be a terminal penalty of 1,600 yen (excluding tax) per month.

3,280 JPY monthly (Tax not included)

2 Options

MUGEN Warranty period
500 JPY monthly(Tax not included)

What's included
  • If the device fails under normal operating conditions in accordance
    with the instruction manual and other precautions.
  • When the device is damaged by water
  • When the device is damaged and malfunctions
  • When the device is fully damaged
What's out of warranty
  • Repair or replacement is not covered by the warranty in the following cases
  • When lost or stolen
  • When you want to have battery repaired
Caution
  • We will exchange it with "brand-new" for submergence and total loss
  • The coverage period is limited to the option subscription period
  • If you want to receive the compensation again within 12 months after receiving the compensation 1 time, it costs 3,800 yen per device
  • You can only add this option when you register
  • You cannot join this option after registration and midterm cancellation not accepted
  • If the initial terminal is defective, it can be replaced free of charge

Next month using option
fee
0 yenTax not included

What is next month using option?
For Mugen WiFi, which is not available on a daily basis, why don't we start using it from the 1st of the next month
*(1) and greet the next month of the best communication environment?
  • * It depends on the stock
  • *(1) Contraction day will be from 1st day of next month and 30 day warranty will be until 1st day of month after next
  • * 3,000JPY (Tax not included) will be charged as a system fee
  • * If you cancel within 8 days after applying, you can cancel your contract using the initial cancellation system

Lowest international rates
available in 134 countries

1GB/1day for unlimited use in all countries for a full fixed price (384 Kbps at low speed)

Area01Asia/Europe
America/Australia

1,200yenTax not included

Area02Middle East, Africa, South America.

1,600yenTax not included

POINT01
No procedure required! Just bring it as it is.
POINT02
If you don't use it overseas, it's free!
POINT03
Video at lower speeds
at 384 Kbps
  • * After exceeding 1GB, the communication speed is 384 Kbps with no limit. Please note that high-speed communication with LTE is limited to 1GB per day

  • * The capacity reset time for 1 day is 0: 00 Japan time (Example: 1 day = Day 0: 00 ~ 23: 59) Even if the usage date is less than 1GB, the capacity cannot be carried over to the next day.

Three-year cost comparison of
unlimited Wi-Fi

1st month -
12th months
13th to
24th months
After
25 months
Cheap Plan(U2s)
¥3,280/month
¥3,280/month
¥3,280/month
TOTAL¥118,080
どんな時もWiFi
D WiFi data unlimited (D1)
¥3,480/month
¥3,480/month
¥3,480/month
TOTAL¥131,280
1st month -
12th months
13th to
24th months
After
25 months
GMOtokutokuBB
WiMAX
Unlimited Data Plan
W06
¥3,609/month
¥4,263/month
cashback¥32,000
¥4,263/month
¥3,280/month
TOTAL¥120,160
So-net Flat
two-plus
unlimited giga W06
¥3,380/month
¥4,379/month
¥4,379/month
TOTAL¥145,656

Cheap Plan
1st to 12th months
¥3,280/month
13th to 24th months
¥3,280/month
After 25 months
¥3,280/month
TOTAL
¥118,080
D WiFi
data unlimited(D1)
1st to 12th months
¥3,480/month
13th to 24th months
¥3,480/month
After 25 months
¥3,980/month
TOTAL
¥131,280
TTWiMAX
data unlimited
Plan W06
1st month - 12th months
¥3,609/month
¥4,263/month
13th to 24th months
cashback
¥32,000
¥4,263/month
After 25 months
¥4,263/month
TOTAL
¥120,160
S company
two-plus
unlimited giga W06
1st month - 12th months
¥3,380/month
13th to 24th months
¥4,379/month
After 25 months
¥4,379/month
TOTAL
¥145,656

3,280 JPY monthly (Tax not included)

Watch out for mobile routers like this!

cash back is prohibitively high
In fact, most of the cashback will be received in 13 months. ... Moreover, please make sure that you can receive the address issued by the provider, not the one you usually use.

Despite the promise of free upfront costs, ...
The initial fee is free ... It sounds very good, but please calm down. (1) If you do not subscribe to the option, you will not be able to receive it. (2) Depending on your choice of payment method, you may not be able to receive it and you may have to pay more than 20,000 yen for the handset.

It's cheap, but I don't know what will arrive.
The monthly fee is very cheap, and the mobile router with no limit of contract period is very attractive, but there are cases where the actual router delivered is a damaged used one or the speed is slower than expected. You can rent it for just 1 ~ 2 weeks, but if you're going to use it for 2 years or so, I highly recommend using a solid, reliable router.

Frequently Asked Questions & Full Warranty Requirements

If you still have any questions after reading the
Q & A, please contact us through the inquiry form.

A We have cut costs as much as possible, such as reducing the number of staff in charge, reducing advertising costs, and sending contract documents in PDF format that do not use space. We do not use any malicious channels from suppliers or new old items, and of course we do not send malicious spam emails to buyers. Our mission is to provide products as cheaply as possible until the advent of 5G society.
A It will be shipped immediately. On Saturdays, Sundays and national holidays, we will ship on the next business day at the earliest. If the number of orders increases rapidly, or the arrival date varies depending on the delivery area, please contact the delivery company for the package after shipping.
A If it is judged that the problem was not caused by the intention of the customer, there will be 1 year free replacement compensation.
A We do not specify the delivery time. Also, the terminal arrival date is only an estimate, and we may not be able to meet your request depending on the delivery area, the stock status, and traffic conditions.
A When you sign a contract, the shipping fee for the first terminal and the replacement due to the initial failure of the terminal will be free of charge. Please note that you will be responsible for the return of the handset upon cancellation, and the shipping cost for the handset failure, loss, or submergence.
A We only accept A credit card. It supports VISA/JCB/MasterCard/AMERICAN EXPRESS/DinersClub. We don't accept debit cards, prepaid cards and credit cards with overseas contracts.
A We don't offer daily rates. If you submit a delivery request for the next month when you apply, you can set the delivery for the next month or later. We appreciate your understanding that we are unable to revise your application since we have received so many applications. Also, please note that we cannot "Change to next month's usage" after the terminal arrives.
A Please contact us through the inquiry form. We will respond by sending you a change notice.
A The A receipt will be paid by credit card, so the credit card company's statement will be the official receipt. Please note that our company will not reissue the receipt.
A We provide sufficient data capacity in a general usage environment, but from the viewpoint of maintaining network quality and using radio waves fairly, we will stop communication or take measures to slow down the speed for users who communicate in a large capacity. Please refrain from using the following services. Please refrain from watching video content for long periods of time, playing online games for long periods of time, downloading large amounts of data, talking over the Internet for long periods of time, watching high resolution movies, or always connecting to multiple devices. If the above conditions are not met, the communication speed may be limited to approximately 384 Kbps for the purpose of maintaining network quality and fair use of radio waves. Please note that we will not issue any refund or exchange in case of suspension or speed limit depending on the usage. In addition, if there is a suspicion of illegal downloading or illegal use, the use of the terminal itself may be suspended.
A It is possible to use it if it is the area where the domestic communication carrier is connected, but if it is out of the service area, please contact us through the inquiry form. Because there is a possibility that the terminal is malfunctioning, you can exchange it for free within a year. If you are not a member of the compensation plan, you will be charged for the damage caused by the customer or the trouble or submergence caused by the dirty image on the equipment.
A Please contact us through the inquiry form, and you can easily cancel the contract by returning it.
A If you do not subscribe to the A compensation plan and re-purchase the device, 20,000 yen will be charged as a purchase cost. * We do not accept payment in installments
A You cannot make a contract under the name of 18 years old. Please make a contract in the name of your adult family.
A ◆ Initial monthly payment fee
→ Payment date: Application date
→ Payment amount: Monthly fee per terminal + (option cost)
◆ Initial fee:
→ Payment date: Within this month of the application month
→ Payment amount: Administrative fee 3,000 yen (excluding tax)

◆ Monthly
→ Payment date: Monthly "middle" from the month following the application month
→ Estimated amount of payment: Monthly fee per terminal + (option cost)
A You can change the terminal after applying, but you cannot cancel it.

Terms and Conditions of the Full Refund Guarantee

  1. Within 30 days from the date of application from the form, please contact us via the inquiry form, stating "I want a full refund guarantee." and "reason for cancellation" "tracking number".
  2. The "date and time of shipment" of the return must be within 30 days. Example) If the application is at 1: 00 PM on August 1 ○ Covered: Shipping at 7: 00 PM on August 30 × Unwarrantable: Shipping at 7: 00 AM on August 31
  3. This is your first time using Mugen WiFi.
  4. If you use it overseas, there will be an extra charge for daily use.
  5. If you use more than 50 GB, there will be a cancellation fee of 9,000 yen. + If you do not return the device, you will be charged 1,600 yen for the next month to 24 months.
  6. *Please note that we cannot complete the acceptance if all the conditions ① to ⑤ above are not met.

Notes on the full refund guarantee

  1. If the box is damaged or the instruction manual is missing, there will be an additional cost of 20,000 yen (excluding tax).
  2. If it's more than 30 days, there will be a penalty.
  3. There will be a handling charge of 1,000 yen (excluding tax) for the return.
  4. Also, the applicant is responsible for the shipping cost.
  5. If you use it overseas, there will be an extra charge for daily use.
  6. If you use more than 50 GB, there will be a 9,000 yen cancellation fee plus 1,600 yen for the next month to 24 months if you do not return the device.

3,280 JPY monthly (Tax not included)