How to View Logs from iPhone and iPad on a Mac
The iPhone and iPad generate logs of some system activity, including app crashes and other potentially interesting or helpful data. By connecting an iOS device to a Mac, you can review those logs.
Browsing through log data is generally only useful for developers and advanced users, either for troubleshooting or diagnostic purposes, but it may have broader applications for some other environments too. And it’s possible that even more casual yet curious tinkerer-types may find it interesting to browse through, even if the data is largely irrelevant to them and their device usage.