iPhone X boot problem

How to check when an iPhone X has been booted before its last boot?

Is there a way to see when an iPhone has been booted before its last boot? I have a regular iPhone X with current iOS. Are there any log files available? I tried some Apps in the AppStore that pretend to give you a “terminal”, but they run completely in user space and do not have access to any system files. Constraints for a solution:

I do not have an Apple computer available right now
No jailbreak
Linux or Windows computer may be involved
Non-destructive impact on the iPhone