It seems my Cordova app can't access my API... It always gives me an error (with fetch() for instance: "TypeError: Load failed").
I guess this is some specific config thing that I haven't found yet.
I know my Django API works and is accessible from my mobile device (using API Tester for example).
I have followed the steps to allow CORS (CORS_ALLOW_ALL_ORIGINS = True, in settings.py)
Fetching from a swift app works on the same phone.
Fetching a public API doesn't work either with Cordova.
Fetching with Cordova works on my iOS simulator.
I have tried some config modifications in the plist file or config.xml.
I would be glad if someone could help me, thank you.
I can provide any additional information one might need to help my case.
Here is a solution that worked for me, for anyone that might encounter this problem one day :D
Use the Cordova plugin : cordova-plugin-advanced-http
It provides a native implementation to perform the request, instead of using WebView, which was blocking the request, from what I understand...
The plugin offers the global object "cordova.plugin.http" that you can use to perform the request (check GitHub repo for more information on how to implement it).