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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 are not easy to set up, especially for those not used to the system. Instead, use a router that only requires powering on and entering a password for instant connection. It is the easier connection, suitable for users of all ages.

Also, since you cannot use a SIM card with more than one device, it can be incovenient for anyone travelling with friends or family who also wish to use the internet.

And even those who still think a SIM card is better for them still risk losing their original SIM while they are using their new SIM in Japan.

SIMとの違い

Differences Between SIM Cards & WiFi Routers

NINJA WiFi
NINJA WiFi
SIMカード
SIM Card
Fees 3GB High Speed Data plan 770 yen/day
5GB High Speed Data plan 1,100 yen/day
10GB High Speed Data plan 1,320 yen/day
(tax included)
3,500 yen/14 days (Company A)
3,150 yen/30 days (Company B)
Transmission Rates 4G/LTE
  • 4G/LTE
  • May get even slower than general connection lines due to MVNO providers
Data Volume UNLIMITED*
  • 100 MB/1 day (Company A)
  • 1 GB/30 days (Company B)
    • Transmission rates limited to 360 MB/3 days
Areas of Connectivity All over Japan All over Japan
Portability Pocket-sized Inside your smart phone

※High speed data is limited by your plan. Once exceeded, users will only be able to use slower internet.

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 at a 360p resolution 11 MB 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 at a 360p resolution 29 MB 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