HowTo: Which attributes are used by Contacts app by default

Would you please then also post the created VCF file?

Thanks

Sure

BEGIN:VCARD
VERSION:4.0
PRODID:-//Nextcloud Contacts v3.0.4
UID:a8e7c99f-00b5-43f0-aa5a-d3c415dca217
REV;VALUE=DATE-AND-OR-TIME:20190311T082041Z
FN:New contact
ADR;TYPE=HOME:;;;;;;
EMAIL;TYPE=HOME:
TEL;TYPE="HOME,VOICE":
END:VCARD

As there is no feedback since a while I will close this ticket. If this is still happening please make sure to upgrade to the latest version. After that, feel free to reopen.