Why is the iphone 5 battery so bad?

I have taken my phone into apple and got a replacement iPhone 5, the battery hasn't improved at all. I have location services off, LTE Data roaming off, brightness is down more less fully and my multi tasking is always clear. I have restored the iPhone as a new phone as i was told this might help but no joy. Anyone help?

That's the problem with some, they don't read reviews, they have to buy the latest Apple product. You could always buy a higher capacity battery… Oh, I forgot, you can't do that either.
Why not buy a decent phone made by someone else.

Apple

You should get a droid

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