If you leave your iTouch / iPhone on silent mode (Black screen / screen is off) you will find your battery around 57%. If you wanna reduce the battery usage go to your settings and turn on airplane mode with Wi-Fi off. Then all you have to do is set your alarm clock on and put it to silent mode. Battery life will remain at 98%-100% range.

- For Shotgun / iTouch / iPhone users.

-Storm