Answer to: Replaced new battery but still short lifeTry draining it fully until it dies, and then charging it. The battery needs to be conditioned and the phone's battery calibration might get reset as well. If that doesn't do the trick in a day or two, you probably have some app draining your battery. The next step would be doing a full/hard reset, don't restore from backup, and reload the apps and settings manually. Painful but maybe necessary for you. Good luck!