Anyone who wants to access the HEX-NET via a web browser in WIFI-AP (Access Point) mode should ensure that data usage is disabled over the mobile network.
Unfortunately, I sometimes forget this myself and then wonder why the connection via WIFI to

doesn't really work. The reason is that the phone is trying to reach the IP address 192.168.0.1 via the mobile network instead of using Wi-Fi.
Important for all people who are using the HEX-NET in Access Point mode via WIFI while on the go, using a web browser on their mobile phone.
http://192.168.0.1