Yes, you can use your mobile phone in Japan, but be careful as not all phones work on the frequencies used here. Also be sure to turn data roaming off if you want to avoid hefty fees from your provider back home. Internet is not widely available in public spaces, so that’s why we recommend booking a SIM or eSIM through Mobal pocket WiFi. You can book yours when applying for your trip and you can even connect up to 10 devices!