I am trying to save battery on my hero. I know the GPS can drain the battery. However completely shutting all of the options to off makes nothing work that is location related and its a pain to turn all of them on and off when using or not using certain apps. The three settings are: Use wireless networks Location Setting Enable GPS Satellites Now I only have the Location Setting turned on. I have read a lot online that this doesn't use addtional battery power. Is that true or should I have other options selected to save power?