Where can I use the app? Also, what kind of Wi-Fi can I connect to?
You can use it in Wi-Fi spots throughout Japan such as in airports, on trains, in convenience stores and in coffee shops where we support Wi-Fi services.
You can check this with the Wi-Fi spot map, or with a supported Wi-Fi service.
The Wi-Fi services that you can connect to are highly reliable free Wi-Fi (public wireless LAN access services) that are all provided by area owners such as companies and local governments in order to provide convenient internet access during shopping and travel, etc. Japan Wi-Fi Auto-connect is an official connection/authentication app developed in cooperation with area owners.