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.
Differences Between SIM Cards & WiFi Routers
|
 NINJA WiFi |
 SIM Card |
Fees |
¥990(tax included) / 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 |