Since I updated my C6-01 to Belle last week, I have a feelling that my battery is lasting longer then before. I have no ways of making an exact mesure, but I almost sure that Belle is more energy efficient then the previous version of the system (Anna, Symbian^3).
What do you think about that? Are you charging your phone (not only C6-01) less frequently since you updated it to Belle?
Yeah, I have noticed that I need to charge my C6-01 less frequently now that it's running Belle. I would estimate that the battery lasts almost twice as long, compared to Anna.