IPhone 5 battery goes down so fast?

Ok so I got my iPhone 5. And I'm having battery problems. When my phone is in sleep mode it goes down one to two sometimes three when not even using it. There will be other times when I'm on it just for a couple seconds to check mail and three to four percent go down. If anyone could have some answers that would be great. Just over all not getting the battery life that I should be getting.

Reduce display brightness and screen time out… This may help.

Better u change your iphone, go for any nokia basic (especially 2100)

Sometimes some game or application are not close properly so you should check that all apps are close properly or not. If ot close properly then you should close all apps properly after using.

I have the 5 also, and the way I make my battery last is
1.turn brightness to about half
2.turn off 3G when I'm not using it.
3.close all apps in the little multitask thingy when you double click the home screen.
4. Only charge it when it's less than 10% battery, and keep it on charge until 100%! This helps the battery last longer in the long run. However if you have been charging it improperly since the beginning then it's probably too late and the battery's probably ruined.

My iphone 5c won't notify me when I have a voicemail

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