ok, im sick of all of the users on the forums saying "oh learn how to use your device" "it is not ios, its the way you use your phone" i used to get 8-9 hours of usage on my iphone 4 before ios 6.1.2. as soon as i updated, that changed. im lucky if i get about 5-6 hours of usage, and its verrry light usage. i did not change any settings, install anything new or anything like that. i already know once i post this there will probably be 10 people telling me to stop complaining and that it is my fault for my battery draining. but i really dont care, i have the right to complain!