Why does my iPhone 4S have bad battery life?

I was told that the iPhone has good battery life… So why is that my brand new iPhone 4s (which I got in December of 2012 and it is now February 2013) loses so much!
I start off the day (8AM) at 100% and, continously texting, I'm down to 34% by 11:30am!
I have 3 email accounts set up, but iCloud is turned off and so are Locations now. It's updated to iOS 6.1.1
I don't have the best reception at school and my house (1 bar in my house, 2 if I'm lucky) and up to 3 bars sometimes in some classrooms at school - I figured this was the leading problem.
I'm on Virgin Mobile…

This is a known issue with the iPhone 4S. Some things you can do to save some battery life is to disable Siri and iCloud and limit push to manual if possible.

Turn off push technology and bluetooth

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