net::ERR_CONNECTION_REFUSED (http://localhost:8080/)

[pclavequin]

Thanks for your help but the problem is the new version of cordova-plugin-ionic-webview 2.0 which breaks the compatibility with Android 4.4… I found the solution on another thread:

Simple Ionic 3 App Not Working on Android Device

I was able to make my app work on Android v. 4.4.2, replacing the cordova-plugin-ionic-webview version 2, with version 1.2.1 The commands I used where these: cordova plugin rm cordova-plugin-ionic-webview cordova plugin add cordova-plugin-ionic-webview@1.2.1 ionic cordova platforms remove android rm -rf plugins ionic cordova build android