My OS % is hovering between 40-50%. It's hard for me to be concerned, though, since I'm getting excellent battery life. I've had it off the charger for 6.5 hours now and I'm still at 80%.
Light use...mainly just checking Facebook and Twitter throughout the day.
GPS off
Wi-Fi off
4G enabled
Using Battery extender to shut down GPS, background sync, and cellular data when the phone is not in use.
Also disabling cellular data when I'm on my home wi-fi network.
One question I do have: I have wi-fi disabled at work, but everytime I launch the twitter app it tries to foce wi-fi to come on. It doesn't work since I have it disabled, and then I have to launch twitter again before it comes up. Any ideas on this?
Thanks!