Z10 Battery - enhanced fast dormancy
A friend from carrier notify that the battery will remain bad until enhanced fast dormancy is applied by the carrier network.
I remember the same thing few year ago with android where you go to engineering screen and enhanced fast dormancy is there as an option.
Bottom line is now that BIS is gone carrier networks setting will pretty much define signal search and battery life.
So unless we got update from carrier, the battery will never get better.
Posted via CB10