I had 4G turned on overnight as well (where I have full 4g/3g service). I've heard that leaving 4G on while in a 3G-only area will drain the battery, but hopef

I had 4G turned on overnight as well (where I have full 4g/3g service). I've heard that leaving 4G on while in a 3G-only area will drain the battery, but hopefully that problem will be fixed with an update.