Free yourself from any restraints in Japan with Mobile WiFi router!

Differences from SIM Cards

Comparing the two reveals how much more convenient a router really is.
SIM cards can establish a connection with the internet. However, we recommend you use a WiFi router if you plan to visit various sightseeing locations and use the internet a lot while traveling around.

SIM Cards just started being sold in Japan, so finding them can be challenging. Also, they may not be compatible with some smartphones.

However, the main issue is that SIM cards only allow you to use a bare minimum connection with the internet due to slow transmission rates and a small amount of data usage per day.

SIMとの違い

Differences Between SIM Cards & WiFi Routers

NINJA WiFi
NINJA WiFi
SIMカード
SIM Card
Fees ¥900 / day ¥3,500 / 14 days (Company A)
¥3,150 / 30 days (Company B)
Transmission Rates 4G/LTE 4G/LTE
may get even slower than general connection lines because of MVNO providers
Data Volume UNLIMITED* 1 day / 100 MB (Company A)
almost impossible to do things like watch videos
References for 100 MB
1 GB / 30 days (Company B)
note that transmission rates will be limited to 360 MB / 3 days
Areas of Connectivity All over Japan All over Japan
Portability Pocket-sized Plugged into your smart phone

※Please be aware that exceeding 3GB in a day can result in a loss of speed and possibly a temporary loss of connection.

List of Available Transmission Loads at 100 MB Based on Service

Please note that these are only to be used as a guide. They may differ from your actual connectivity depending on the settings of your device and the advertisements displayed.

Smart Phone
Service Operation Details Data Used Per 100 MB
Email Attach high quality images 3 MB About 33 emails
Twitter Reload after a text only tweet of 140 characters 90 KB About 1137 times
Video Watch a YouTube video for 5 minutes 11 MB About 9 times (about 45 minutes)
Map Use the Google Maps app to search, enlarge, and shrink your destination 3.7 MB About 27 times
Telephone App Make a Skype call for 1 minute 0.6 MB About 166 minutes
PC
Service Operation Details Data Used Per 100 MB
Email Attach high quality images 3 MB About 33 emails
Twitter Reload after a text only tweet of 140 characters 330 KB About 310 times
Video Watch a Youtube video for 5 minutes at a standard resolution (360p) 29 MB About 3 times (about 15 minutes)
Map Use the Google Maps app to search, enlarge, and shrink your destination 12.2 MB About 8 times
Telephone App Make a Skype call for 1 minute 0.9 MB About 111 minutes