If it feels like your new Apple iPhone 5s isn't providing you with the kind of battery life you were expecting, you might not be as paranoid as your friends tell you that you are; according to no less an August publication like the New York Times, some units of the full-featured iPhone have been affected by a "recently discovered" manufacturing issue that decreases the battery life on the handset, or makes it longer for the cell to recharge...
Source: http://www.phonearena.com/news/Some-Apple-iPhone-5s-units-have-problems-with-battery-life-and-will-be-replaced_id48851
Source: http://www.phonearena.com/news/Some-Apple-iPhone-5s-units-have-problems-with-battery-life-and-will-be-replaced_id48851