> If you don't mind being more specific, what kind of data would you be storing on the phone? Sure, my particular use-case is a media management/playback appli

> If you don't mind being more specific, what kind of data would you be storing on the phone? Sure, my particular use-case is a media management/playback application (think web-based audio player; like Plex, Ampache, Spotify) that is intended to be used with a large personal library of audio files (in the order of a hundred thousand files, about 1 TB of data). The application has an offline-mode (via ServiceWorkers, everything being REST, content addressed and infinitely cacheable), where the connected client can request to "pin" a certain playlist/filter. Upon request, all media files with that filter will be transcoded/downloaded onto the client and are available even when having no connection. So it's not really any data that needs to be kept secure (still, all media blobs are encrypted anyhow to allow public caching -- for internet hosted instances -- without having to fear IP issues).