Your device may not be receiving the Wi-Fi signal, even inside a facility where Wi-Fi is available.

For example, in the station shown here, you can connect to Wi-Fi near the access point set up on the second floor, but you cannot connect on the first floor as it is out of the Wi-Fi service area.

If the signal is too weak even inside a facility where Wi-Fi is available, check stickers, posters, floor guides, etc., and move close to an access point before connecting.

If you use the iOS version