1、update every things to ionic3 uninstall, install , update npm....etc
2、use ionic 3, create new project, run, sure can run on android.
3、copy old config.xml data to new config.xml
4、change new project src -> src1, then copy old project src.
4.1、 code have any ionic-native change @ionic-native/xxxxxxxxx
4.2 、src/app/app.module.ts
.top add import { BrowserModule } from '@angular/platform-browser';
.import、providers same 4.1
4.3、copy new project src/index.html 、 src/service-worker.js
then try ionic cordova android --emulator