What's up with the terrible battery life on the s7? I feel somewhat mislead by all the review I read before I got two of these things for my family. The battery life is worse than my s5, even though the battery is much bigger. Plus, the biggest consumer is consistently android itself, rather than screen. This should just not be. All the reviews I watched and read mentioned optimized software that should lead to enhanced battery life. Not my experience at all. Anyone else?