Tell me about it, those numbers are WAY too tiny. To send a private message you can use this link: http://bit.ly/2igAXKH Please include the full model code in your message.
I am having the same issues with very high battery use on a brand new Tab S2 8.0. It auto updated to 7.0 out of the box so I can't compare it to 6.0. But it's the battery drains much faster than when using my ancient Nexus 7.
I also had this problem with my s6. I eventually got a new phone-an s5-it got to the point where I had to have the phone charging in order to use it. When I asked for help, I was directed to run it in safe mode/factory reset. Neither helped. I'm afraid to run the update on my s5 because I cannot afford another phone if this comes up again. Very disappointing...
I have the exact same problem with my tab S2 9.7 T813 (battery life dropped from 5-6 days to only 1 day now, overnight drain went from 2-3% to 50%).
I had tried resetting the tablet to factory settings and I kept wifi turned off but still the battery dropped 50% overnight.
So I had it sent back for repair, because I couldn't fix it myself.
When the tablet came back after 2 weeks, the samsung repair technician said it was fixed.
The sotware had been reset and a new changer and cable came with it.
I charged it again with this new charger, but nothing has changed. The battery still drains much too fast.
Is this a known issue after the Nougat update?
Does anybody at Samsung knows a real fix for this problem?
This is indeed very disappointing...