So my friend got an s4 and her battery life is great and mine i bought it last night ran it dead charged it wih it off for 11 hours wokeup unplugged it drove 5 min to work n it drained a percent maybe im being picky here but my friend said she unplugged hrs at 9 am and after 5 hours she only lost 9 percent maybe im doing something wrong she said she had the brightness at 50 percent n battery saving mode on ugh im so mad i can never get good battery life