@gazumped Your reply surprises me. I've been using the living hell out of Evernote for Android with inherent connectivity problems on my phone (2 GB of RAM, Android 7). Affected were Both, mobile data and WiFi. Even with an insidious bug where lack of connectivity wouldn't be reported to the device (all indicators keep showing connection present). And with that junk of a phone I've never experienced an issue with data loss or note lockout. The app stores a new note perfectly safe for however long it needs until connectivity is restored. He'll, it will do so even through a phone reboot.
The only note loss possible is with using the Evernote widget. Which is a real trap, frankly speaking.
While we're at it, let me remind that Evernote web (at least the old one) is almost guaranteed to delete a note or partially delete note information when on quirky connection. Which also should NOT happen. But it does.