No but if you just got it sometimes the battery has to calibrate. I believe this can affect when it thinks it's at 100% vs. actually being there. My iPhone 6 Plus, through various tests, can last two days. Each time the battery lasted about 12.5 hours of usage, with about 1 day 18 hours of standby. This includes browsing the web, watching some YouTube videos, listening to some music, playing games (only a little bit). I also have several widgets installed which take up a small amount of my battery usage at the bottom, and apps like Dropbox that automatically upload photos in the background when I change locations. I usually keep my brightness between 33-50% because it strains my eyes when it's too bright.