It is not possible to connect the camera to an existing Wi-Fi network and access the app while travelling. When using the app, the mobile phone must be within range of the camera's own Wi-Fi. First, the mobile phone "wakes up" the camera with a Bluetooth connection and then the data is exchanged with the camera WiFi via the app (the range is limited).

No, in the
No, you can establish an internal connection between the mobile and the camera close to the camera.