I was notified this week that 4.1.2 was available so I upgraded.
Since then I find that my phone gets warm and the battery lasts less than 4 hours. I'm not entirely sure but I think it is because of "My Tracks", which I use now and then. Now it seems to be permanently on and it is not possible to close it. I think it's used by "Google Now". The only way I could get my battery life back was to uninstall My Tracks but then "Now" is not much use.
Has anyone else had this issue?
My phone is a GT-N7000