Using synology contacts but default account doesn't show up

Because you say you are using Synology to store your contacts and Apple doesn't own them or have anything to do with them. If you were saving your contacts to iCloud that would be different, but evidently you aren't. Most of us have never heard of Synology. So expecting users on a user to user only forum to know much if anything about Synology isn't likely going to happen. Contacts on iPhone are typically tied to an email account. But I don't know anything about Synology or whether it's an email account or what it is actually?

FYI: The OP is presumably running a Synology NAS.

Contacts is an app which runs inside the NAS’ OS (aka DSM) environment.

https://www.synology.com/en-global/dsm/feature/contacts

Doesn’t really change the thread’s “answer” though; unless there’s a “lucky hit” upon a fellow community member proficient on the same app.

Chattanoogan wrote:

FYI: The OP is presumably running a Synology NAS.

Contacts is an app which runs inside the NAS’ OS (aka DSM) environment.

https://www.synology.com/en-global/dsm/feature/contacts

Doesn’t really change the thread’s “answer” though, unless there’s a lucky “hit” upon a fellow community member proficient on the same app.

Hence why I suggested they contact Synology for help with their app and/or service.

Exactly.

There will be FAR higher concentration of potentially helpful iPhone users in a Synology community …

… than there will be proficient Synology Contacts users in a HUGE Apple community.

But … one never knows … there are some “pretty smart cookies” ‘round here. 😉

KoBr1 wrote:

Good morning

I see I wasn’t clear. The Synology contacts provides a carddav wat of sharing your contacts. So I connected my iphone using carddav. And that’s why I contacted the apple community. Because I think it’s a carddav related issue. I have 3 carddav accounts connected and then the dropdown box for the default account doesn’t show up. I guess would be that it’s related to the carddav option in the iphone. Maybe it’s another version ( because when I connect using cardbook, a plugin for thunderbird it states carddav version 3). I’m not sure what IOs is supporting. But I will contact the Synology community as well. Many thanks.

Then contact either Synology or CardDav. CardDav is also not associated with Apple at all. I'm not sure why you think Apple users will know much, if anything about Synology or CardDav?

You'd need to ask Synology about their service as they are not associated with Apple at all.