Not sure where this should go, I have made some comments on the launchpad bugs pages.
Basically I think loads of the trouble I'm having with apps not starting, crashing or hanging after the initial loading screen is related to https://bugs.launchpad.net/ubports-android/+bug/1625832, would make sense if the web apps use Browser as a base?
Not sure why uNav would hang but maybe what is crashing the Browser app is also causing calls to web services in other apps to silently fail?
Telegram 100% works, so not a connectivity issue.