Batter life IOS 7, iPhone 5c?

I just bought an iphone 5c last week on saturday. I love the device itself, its great, but what i don't love is the battery life. For the first week, the battery life was amazing and when i went to bed at night is was at 30%, but out of no where, my battery started draining like that, and now i'm losing 1% every 4 minutes. It happened out of nowhere for no reason. I have done all those tricks to increase battery life but is this normal and is there anything i can do?

Will apple replace my broken iPhone if the screen is cracked?

So my iPhone's screen cracked about two weeks ago, at that time it was fully working but now it stopped working cz of some fault inside, not sure why (the half of the screen went black with the white screen of death) so I'm taking my iPhone to apple store tomorrow, do you guys think the cracked screen will affect that they will replace the phone for free? Once I've got my cracked iPad replaced cz the fault showed up after the crack, but I'm worrying about the iPhone cz I've heard there's some new rules about repairs and suff so please, help if you guys know something about this.thanks.

Added (1). I don't understand why some of the answers are negative, as I've said, the phone broke but itself, it broke after the screen was cracked and the exact thing happened with my iPad 3 months ago and they replaced it for free cz at that time the home button stopped working after the whole screen cracked cz i dropped it weeks before the button broke bu I'm just worrying about the iPhone cz I've heard about the new rules so I'm asking if there's someone out there who has some closer info about this

Cheap ways to unlock my iphone 5s through at&t?

I have an iphone 5s that I bought. I have a US Cellular account and a iphone US Cellular sim card. I need to have it unlocked from AT&T though. The cheapest I have found is $70 that would take between 7-14 days to unlock. Any better options?

How to activate an iPhone 5C for Boost Mobile?

It's a Sprint iPhone 5c, new, but when I go BoostMobile's website and enter my MEID into the "identify your phone" page it tells me, "MEID/ESN provide is not eligible for activation with Boost. Please use valid Boost equipment for Activation."

So how do I activate my phone then? Any help is greatly appreciated.

I bought a new iphone 5 second hand need a

Bought a iphone five second hand of a randomer and have reset the iphone settings completely as I turn it on and log it to my Wi-Fi it comes up saying I need to put in the last owners email and password for the icloud because it had find my iphone app or something:/ anyone know what I can do to get in or avoid that? Please otherwise i've been bumped.

Iphone 5 orange juice damage

I have a new iphone 5 just diped it in tinny little orange juice spilled at the bottom where the charger and spekers are. Immediately I realized the speakers won't work properly they work when my phone rings but when I try to play media they won't work. Also the mic seems to not work. I put it in rice for an hour now I don't know what to do. All the service centres are closed now it's late. Should I keep it in rice?
Please give me practical asnwers. If there's a permanent damage can I replace the speakers and mic?