What's the best way to troubleshoot problems with a phonegap build?

I've created an app using PhoneGap, and it works fine in ripple emulator, chrome inspector and using the PhoneGap Android app. The only place the app doesn't work is when I build it and install it on my android device using the apk. The app uses a number of API's created using AWS and fetch POST in the javascript. When opening the app on my android device it loads up, asks me to make it full screen and then behaves as if it can't connect to the internet/my API's. I've tried lots of suggestions that I've seen in other threads but I'm extremely new to PhoneGap and I'm not sure where to begin troubleshooting this. Is there anything that needs to go in config.xml to allow for API calls, and what is the best way to troubleshoot/see logs?