Rent Softbank K4 for a week with Ninja WiFi

2024 7/18

June 3, 2024 July 18, 2024

Today I rented Softbank K4 from Ninja WiFi and used it for 1 week.

I have summarized my impressions of actually using it, how to return it, and the features of the plan, so please refer to it if you are considering traveling to Japan!

TOC

What is Softbank K4?

SoftBank K4 is a pocket WiFi device handled by Ninja WiFi. It features a black body with a simple LCD in the middle. The LCD is a touch panel, so operation is similar to that of a smartphone, making it easy to use.

It is reasonably sized, lightweight, and easy to carry around. It will be of great help to you when you travel to Japan or go on business trips.Below are the specific specifications of the SoftBankK4 and my impressions of using it.

Specs of Softbank K4

Career	Softbank
Model	K4
Communication method	SoftBank 4G LTE / SoftBank 4G
Communication capacity	3GB per day
Maximum downlink speed	Up to 150 Mbps
Size	Approximately 126(W) × 68(H) × 12.1(D) mm
Mass	Approx. 133g

The cost was around 5,000 yen without subscribing to the warranty plan. However, please be aware that if you do not subscribe to a warranty plan, you will incur compensation costs in the event of damage or loss. If you are unsure, we recommend signing up for a warranty plan. We will introduce the warranty plan later.

You can use 3GB per day. It was the latest smartphone model and had a large screen that made it easy to read.

Click here to apply for Softbank K4

What is the daily traffic limit for SoftBank K4?

SoftBank K4 traffic varies by plan; there are 3GB, 5GB, and 10GB per day plans. If you use more than the plan’s capacity, the communication speed is limited to 128 kbps and slows down.

Once the speed limit is reached, it is not possible to add capacity by contacting Ninja WiFi, so we recommend using the 5GB or 10GB plan if there are multiple users or if you want to dispel concerns about the speed limit.

One Point Advice for Softbank K4
To avoid speed limits, don’t you want to check how much capacity you are using now?
SoftBank K4 allows you to check how much capacity you have used from the screen of your WiFi terminal.
If you check it frequently, you can enjoy Japan without being limited by the speed limit.

Items included when borrowing Softbank K4

The following four items are given upon receipt: WiFi device, charging cable, user manual, and storage pouch. I put the entire pouch in my bag and moved around so as not to lose the WiFi device.

Ninja WiFi also offers useful options such as insurance plans for an additional fee!

Power Bank

110 yen/day

This can be used to charge.

Cellphone for Domestic

550 yen/day

This rental option provides you with a cellphone that can only be used to make domestic phone calls within Japan.

POCKETALK W

880 yen/day

You can easily convert languages using this.

USB x 4-port AC Adapter

110 yen/day

Charge multiple devices at the same time, without taking much space.

Ninja WiFi offers a variety of options in addition to insurance plans.
Since I was going to be outside for a long time this time, I added a mobile battery.
It was a great relief to not have to worry about my pocket WiFi running out of charge outside.

Impressions of renting “Softbank K4” with Ninja WiFi

Here are my impressions of the SoftBank K4 and Ninja WiFi in action. If you are considering renting SoftBank K4, please refer to this page.

I rented a K4 from Softbank for a week

Reason for renting SoftBank K4
The reason I rented SoftBank K4 for a week is because I needed pocket WiFi for a trip with friends.
Since I was only using my phone, I decided on the 3 GB per day plan. I received it at the airport and immediately tried connecting it and it was easy to use without any struggle.

The good thing about using SoftBank K4 for a week
After using SoftBank K4 for a week, the good thing is that the connection was basically stress-free everywhere and the speed limit was rarely exceeded.
However, it was sometimes difficult to connect in crowded places or on the subway.
Also, when I shared with my friends, the speed limit was reached.

What is Ninja WiFi?

Ninja Wifi
Ninja WiFi is a service that allows you to rent a mobile WiFi router. It allows users to connect their cell phones, tablets, laptops, etc. to the local cellular network and use the Internet. It is a necessity for tourists traveling to Japan from abroad or coming to Japan on business trips.

Features of Ninja WiFi

Plenty of pick-up and return locations

There are many options for pick-up and return locations, including major airports in Japan, delivery, and local pick-up in Shinjuku, so you can fit it into your schedule.

Very easy to use

It is very easy to use, just turn on the WiFi router and then enter the password to WiFi on the device you want to use. You can also easily apply for the service by clicking the button below.

Can be used by multiple people and carried around

It is not large in size, so it is easy to carry. Also, a single device can connect multiple devices to WiFi. This makes it convenient to share with family and friends.

Go to NINJA WiFi

Pick-up and return location

Name of Airport
Narita International Airport Terminal 2, 1F International Arrivals Lobby “J WiFi & Mobile x GLOBAL WiFi” Counter

Business Hours
7:00 a.m. ~ 9:00 p.m.

Pick-up	Return	On the day

“J WiFi & Mobile x GLOBAL WiFi” Counter MAP

At Ninja WiFi, you can pick up and return at the airport.
This time I went to the “J WiFi & Mobile × GLOBAL WiFi” counter in the international arrival lobby on the 1st floor of Terminal 2 at Narita Airport.
I chose this counter because it offers both pickup and return services, so I did not have to worry about any problems on my way home.
The staff at the counter were courteous and helpful, and I had a good start to my trip.

How to connect Softbank K4

How to

Switch it on

Press the power button on the WiFi device. The position of the button differs slightly from device to device, so if you are not sure, please refer to the user’s manual.

Enter your password

Confirm your SSID and password. This also varies depending on the device, but basically, when you turn on the device, the SSID and password will be displayed or there will be a sticker on the device itself.

Start to use

Enter the password on the WiFi connection screen of the device you wish to use. Most computers and smartphones can be connected from the settings screen.

Do you need pocket WiFi in Japan?

To tell you briefly, I felt that pocket WiFi was necessary to live in Japan for a week.
Here is a summary of what I actually liked about Pocket WiFi and what I would have had trouble with if I did not have Pocket WiFi.

Good points of using Ninja WiFi and points I would have been in trouble without it

Good points about using Ninja WiFi
WiFi is available wherever you are.
It is small and does not get in the way when you carry it around.
There is 3GB in a day, so I rarely run out.
There is a support center, so I don’t have to worry.

Problems without using Ninja WiFi
There is not a lot of secure free WiFi in Japan.
My friend did not return it to the airport, so we shared mine before returning to Japan.

Summary

This is a summary of using SoftBank K4 for a week. This article is summarized as follows

SoftBank K4 is sufficient for a single user with a 3GB daily plan.
Ninja WiFi has numerous pick-up locations and easy connection.
If you want to use pocket WiFi in Japan, SoftBank K4 by Ninja WiFi is recommended.

Go to NINJA WiFi

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