How to transfer contacts from and old iphone to a new one which has been used or 2 weeks

Danidom wrote:

I have an old iPhone XS and a new Iphone 15 Pro which I have been using for 10 days.

At the time of setting up the new Iphone, I didn´t have my old iPhone available so I couldn´t do a backup in iCloud and transfer the contacts from one phone to the other.

Now I was able to do a backup in iCloud of the old iPhone but I can´t really import and merge the contacts from the old phone to the new one.

Any tips?

Do I need to get a 3rd party tool to do this?

Thanks

Contacts are synced to whatever cloud or mail program you use, you simply sign into said account on the 15 and enable contacts.