I have a Galaxy S4 SHV-E330S currently running Official 4.4.2 and only gets 3:30 mins of screen time on my phone. I lose around a percent of battery life every two hours. This is really terrible for me as it is very low compared to other S4 models considering I have the Snapdragon 800 processor, so it's supposed to have more efficient battery life, please post screen shots of your battery usage and screen time as well and the firmware you are currently running. Please indicate the specific model of your S4. Thanks!