gnome-shell-extension-gsconnect is available in Ubuntu, Fedora and meany others, but not in PureOS:
https://github.com/GSConnect
https://extensions.gnome.org/extension/1319/gsconnect/

This package seems to provide 'core' function to Gnome (imho) - phone integration. I realise that PureOS has a phone of it's own which this extension doesn't apply to - but, it would be really helpful to those running PureOS otherwise if this was available to be installed and upgraded as a package with the rest of the package management system.

Perhaps this should go upstream to Debian?