When I put the app developed in Framework7 onto my website as html/css/javascript, and I call REST Web services on my server - works great.
When I use Cordova and build an APK, the call is not reaching my server.
EDIT: Another problem upstream. Ignore for now. thx.
I’m using PouchDB. Was loading from a CDN.
It failed to start in an APK but does start ok when on a web server.
Wasn’t wrapped in a TRY.
Now it’s wrapped in a TRY. 
Was using a CDN. Now, downloaded and included as a local .js in the project.
Set the PouchDB to always use websql : this.pouch = new PouchDB(‘websql://MyDatabase’);
Problem solved. Doing another round of testing.