For two different devices running GOS (P6 & P6a), dialing *#06# returns different results than what is listed in Settings --> About.
Since I do not own a stock-android device and so am unable to check for myself, I've posted to reddit asking if other Android users have different IMEIs listed when dialing *#06#. Several responses say that their results match what is listed in Settings.
So, for clarity, I'm curious if GOS changes something here regarding imeis - or, if not, perhaps someone knows what's going on with this situation.