LG G4 is crashing after testing a couple keys

[outofrange]

Kind of a funny thing: when I get some possible keys, and want to test them for a wireless network, my smartphone, a LG G4, is crashing & rebooting after a couple tries.
I had it happen quite soon when testing about ten keys, but also with only two calculated possibilities.

I guess a phone shouldn't crash & reboot, regardless what actions an app may take, so it is most likely some weird behaviour (= bug) in LG's Android version.
But, nevertheless, if there is anything I could provide (like log files...) to help build a work around for this issue, I would be more than thankful :)

[hackrid]

I have a LG G3, Android 4.4.2, it also crashes and reboots after a few retries! I owned a G2 before and can remember it was also crashing!
what android version does your phone have?

#24 is also related to crashing lg phones...

[outofrange]

Stock (LG) Android, 6.0, Build MRA58K, Kernel 3.10.84, and a security patch level from 2016-01-01.

I have hardly any experience debugging Android apps - are there any log files that could contain some valuable information?