I am on my third 920. The first one I had had really bad battery life, so I hard reset it and I definitely saw a remarkable improvement. I had to change it for a power button problem. So the second one I had, I did a hard reset before I set it up...same with the third one. Steps I take, and has never failed me, are to charge the phone to 100% and then hard reset it while the phone is still on the charger.
I was barely getting through 8-10 hours before the reset and then went up to 24 hours soon after that. Note that I did not return the first or the second device because of battery problems. Once I saw the improvement on the first device after the reset, I did the same with the second device and third one before I started to actively use the device.Out of curiosity, what kind of battery life were you initially getting on your first 920, and now what are you getting on the second/third devices?
It makes absolutely no sense to me whatsoever why this would help battery life, unless it's uninstalling software that the user installed which was running in the background and using a lot of battery.
