Hi Kai. I'm Greg, 10 years awarded Windows MVP, here to help you.
As you know the WIndows native phone app doesn't offer full features for iPhone. This is about the most it will presently do:
https://www.guidingtech.com/link-microsoft-your...
https://www.cultofmac.com/546617/microsoft-your...
https://www.zdnet.com/article/use-iphone-and-wi...
All other ways to use iPhone with Windows 10:
https://www.macrumors.com/how-to/wirelessly-syn...
https://www.compuhoy.com/how-do-i-connect-my-ip...
https://www.alphr.com/how-to-mirror-an-iphone-t...
https://www.nstec.com/how-to-pair-iphone-with-w...
https://www.youtube.com/watch?v=MtnWJV5qaxs
Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.
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