There are few ways to get logs from your iPhone on Windows. One option we'll describe is by using an all-in-one Windows app called 3uTools.
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Watch a short video on how to use it to capture logs or read a step-by-step guide below:
Download and install the latest 3uTools on your PC
Connect your iDevice to PC using the USB cable
Open 3uTools
Click “Toolbox”
Click “Realtime Log” to get the Console logs (You can pause, export or save the logs.)
Once you open real-time Log, you will see what's happening in your device in real-time, however, make sure you are ready to reproduce the issue before you do it.
NB! When you are ready to save the file, always do so in .txt format.