I've tried every power saving tip online and still it seems that the battery just dissipates more quickly than my old S3. I'm lucky if I get 6 hours out of a full charge. Went to school and in 3 hours without even touching the phone and connected to wifi, over 25% drained. What can I do? I'm desperate for tips. Could my battery be bad? I'm thinking of getting a extended battery. Just look at this from today.