Got stolen / lost Android phone back - which logs to check?

Hey everybody,

i've got a question to the experts (you) ;)

After two days i got my stolen or lost Android phone back... i don't use any locking mechanism so it was easily accessible.
It is an Android 5.1.1 stock rom and it looks unmodified but i'm not an expert so my question is: which files or (synchronisation)protocols would you check to find out if there were made any changes to the phone.

Many thanks in advance - mik

Network logs

Hello are they any way to take logs from networks loging in some dates and if we can if login to network by manual or automatic
To understand my problem exactly see this url
http://talk.sonymobile.com/t5/Xperia...1030009#M22740

How to check logs when phone goes to bootloop due to xyz xposed module?

Hi,
I had installed xposed on my Samsung Galaxy S6. The framework as such has no flaws, thanks to @wanam and @rovo89. But whenever I install a module and activate it, there had been scenario's that my phone is going into bootloop and then uninstall/disable xposed in recovery takes hell lot of time as all apps need to be optmised. Is there a way to find out which module has caused the bootloop by looking into logs somewhere?