Can confirm, this is Nougat (7.0) with the security patch of 1st February.
I'll try to find some big differences on the settings..
Oh, and before I forget. Welcome everyone, I just got this phone yesterday. Switching from a Zenfone 2, I hope I'll get a good battery life like almost everyone, and try to participate as most as possible.
EDIT : Which topic we should use? This one or https://forum.xda-developers.com/len...30row-t3580293
Gmail is 100% crashing on my side
EDIT 2 : I received a mail and it didn't crash anymore. Weird