Ever since I got the phone, my battery consistently dies around 1:00 to 1:30 of screen on time. However when I was reading various blogs and forums, I saw all these people getting 3-4 hours of screen on time. What am I doing wrong, if anything at all?

My battery dropped 5% just typing this post on my phone.. Is this normal as well?
Is it something to do with auto brightness? Why is android system and Google play services so high on the battery list?

My battery dropped 5% just typing this post on my phone.. Is this normal as well?
Is it something to do with auto brightness? Why is android system and Google play services so high on the battery list?