I own a Nexus 4 and agree with the parent poster. 14 or more hours mostly idle is normal. I get even more if I dim the screen for normal use. Fortunately, Andr

I own a Nexus 4 and agree with the parent poster. 14 or more hours mostly idle is normal. I get even more if I dim the screen for normal use. Fortunately, Android JellyBean provides all the data you need to fix your problem. If you are getting worse battery life, you need to check Settings -> Battery and determine which apps are unreasonably eating up your battery life.