Japan 30 Day 10GB Data SIM - Docomo IIJmio - Best Value
4G / LTE High-speed internet access with the IIJmio network in Japan. SIM card is using IIJmio or KDDI 3G and 4G networks. 4G coverage footprint of 98% and a combined 4G and 3G coverage footprint of 98.8% of the Japanese population.