: You can create a full backup of your iPhone to your PC. While the call logs aren't directly readable in this format, it secures the data.
If you prefer not to use third-party paid software, you can use these official methods: : You can create a full backup of your iPhone to your PC
: Link your iPhone to your PC using a lightning USB cable. Ensure you tap "Trust" on your iPhone screen if prompted. : You can create a full backup of your iPhone to your PC
For a general demonstration on how to transfer other data like photos from your iPhone to a Windows PC using built-in tools, watch this: : You can create a full backup of your iPhone to your PC
: A similar alternative that allows you to specifically view and select "Others > Call" to transfer logs directly to your PC.