Data SIM Card Plans and Rates for Japan

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It is important to note that prices vary depending on where you buy the SIM. The most relevant operators in Japan are NTT Docomo, Comst and Softbank , although there are also other companies such as Rakuten Mobile, Smash Mobile or b-mobile.

SIM card in Japan
Mobile phones in Japan. Source:
NTT Docomo SIM Card
Considered one of the largest operators in the greece phone number library country, it has good 3G and 4G coverage throughout Japan .

There are two types of cards for sale: one with a duration of 7 days that offers 100 MB of data per day for a price of 25 EUR , and another with a duration of 14 days with 100 MB of data per day for 30 EUR .

The best way to buy these SIM Cards is through vending machines at train stations or airports in each city.


If you buy credit and use up the GB before then, you will have to recharge again, which means a bigger investment.