Sparkimus - How are you using your phone? Going one whole day without a charge for me would mean not even touching the thing. Do you have any suggestions on which smart actions to use to achieve these results?
I took mine back and got a new one. I'm noticing a HUGE difference. That could play a big factor, just having a bad battery.
In addition, I have turned off 4G/LTE and am just using 3G. This I think is also playing an enormous factor.
Do you notice your phone switching from 4g to 3g a lot? I was, and I think this constant changing drained my battery. My house is near 3 towers and they are not all 4g, so it just kept changing. If your phone is doing that I'd really suggest switching on 3g for a whole day and see what happens for you. If it is still bad definitely go get a new one.