1. Can you help us and see if inactivating the "knock twice to retract camera" feature gives you the same battery life as beforeSaran said:1. With the recent update, the screen on time has been reduced with upto 1 to 2 hours.2. GPS accuracy is way off than my old 150 dollar phone, experiencing almost 100 meter inaccuracy, calibration didn't help either.3. Distortion / screeching sound during calls is a major bummer, need a quick update for this.4. It's been only a month since I bought this phone, and it lags most of the time now, especially when I hit the home button when in an app it almost takes 2 Seconds to come to home screen.