Hi! I just got a Z 4 days ago. I have been steadily monitoring the battery life and I'm starting to accept the fact that it is a power hungry device. But what keeps me bothered is my phone's STAMINA mode. I can feel that it doesn't do the job. In fact, I have tried fully charging my Z a while back, and found its STAMINA at this state. (See attached pic). Whenever I turn it off and on, the estimated standby time doesn't change.
Is it too early to judge its effect on my phone or is there a problem that is keeping it from taking effect? Thank you for future reponses!
I'm not going to repeat the many answers I've given on this subject explaining and answering your question - be a good chap and spend a little time searching the forum - stamina would be a good word to start 
a heads up - it takes a while for both modes to profile your usage and accurately look into the future to predict battery life - as you get to know the phone you will do this as well - which is better ? I'd say you are - because you know what your going to do the next 12hrs - the phone is only guessing based on yesterday and the day before :smileyplus:
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