It wasn't dead yet, but wow. I'm just a freshman in high school, so you should get the general jist in usage patterns. Lunch, study hall, and in my case, English, because we literally do nothing in that class.
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And yes, I was using Instagram a lot today. I pretty much went through a lot of Instagram accounts/explore section, and looked through the Internet for various funny pictures for a good 35 minutes. The total was 13 photos, not that much, really. 4-6 hours is generally my average amount of usage time on a full charge. It really sucks. Never has been good since I got my phone on October 6th. Not sure what to do now that I would like to exchange my phone but I passed my 2 week return period, the Apple store is 2 and a half hours away, and my parents would rather not deal with a Genius Bar appointment, a long trip, possibly being sent away with "Nothing is wrong with your iPhone", etc.
My parents also swear that nothing is wrong. Well, my dad does. My mom doesn't really know about this sort of thing, and doesn't exactly care. My dad thinks he knows, but he doesn't really to be honest... He just upgraded from a droid bionic he had for 2 years, it had atrocious battery life. He said if it was at 65% when he went to sleep, it was dead when he woke up. Making it through the day at work wasn't possible, but it was his first smartphone, so he didn't know anything was wrong with that.
Anyway, kind of not sure what to do with this whole situation. Battery also went from 31%-23% just from reading through a couple pages of this thread, and composing this long post.