My 6 was polluted by trojan
viewtopic.php?f=144&t=114188&p=292150&hilit=htmlviewer#p292150
So I decided to go to 7 to eliminate these
Now I'm in firm 20161216 android 7 and is stable
After the upgrade I had to uninstall and update the google play service and set up the mail app
Excessive battery drain solved by setting "battery optimization" excluding from this some apps like bluetooth or telegram
now I will go to 65 hours of use
I think if the company advertises the update to nougat it is normal that a user who does not see the phone update is asking why this is happening
My bv6000 for example has never received fota update
ciao