Thought this was interesting. Apparently all that tracking and advertising software really sucks the juice. New Study Shows that Free Apps Are Killing Your Battery | Techland | TIME.com
More info for saving your battery; Tips And Tricks For Saving Battery Life On Your iPhone And iPad | Cult of Mac
iPhone Jailbreak: The Ultimate Guide | Apple iPhone Review The best place to get the guide and step-by-step instructions. Just follow them..........most importantly, make a backup via itunes before attempting a jailbreak in the rare case that you go stupid and [uck fay] it up.