Go back to Working with react-native-router-flux
In the iOS simulator press Command+D to get the simulator debugger window (Command+M for Android)
There is a very similar menu in Android. When you turn on "Remote debugging" in iOS the chrome tools will launch, in
android you may have to launch them yourself http://localhost:8081/debugger-ui
This will open a browser debugger:
Click "Command + alt + j" to open the developer log. Then click on the "console" log to view the logging from the app.
HTTP/Ajax/XHR requests are hard to debug in simulators, since the requests go through proxy simulators. In src/js/config.js if you enable LOG_NATIVE_HTTP_REQUESTS to true, much of the request info will end up in the console log in the debugger.