Many thanks for your answers, Dobey.
It's quite clear for me now. ☺
No one has replied
Apparently OnlyOffice works fairly well on small screens. It's webbased, so in theory one could probably make a UT app for it based on their electron(?) based desktop app or alternatively connect to their cloud version with a mobile browser.
Thank you for your reply.
I did find requests on Github about the sorting possibilities on the name. I followed your advice and joined the ongoing requests => https://github.com/ubports/address-book-app/issues/12#issuecomment-552354416
It would be a great pleasure to help of implementing the features but I have not the skills to do it, unfortunately.
About my remark about the impossibility of exporting the address book, I just discovered that it is actually possible. I apologize for the mistake.
@lool_lauris I moved your topic to support as that's a better place for it.
Glad it worked out in the end ☺