My Iphone 5 turned off and won't turn back on?

I was just in the middle of checking facebook after texting my boyfriend. My phone went black like it had shut off but no Apple image appeared. Now the phone will not turn on nor will it show any insignia when I plug it into a charger or anything. Please help me!

Added (1). I tried holding down the home and lock buttons (a reset) and that didn't work either.

IPhone says 52 photos takes up 4GB on my phone?

My iphone 5 says that my photos takes up 4GB on my phone but i only have 52 photos, i used to have like 600 but i synced them all to iphoto and then deleted some off them manually off my phone and now it says that its taking up 4GB? It should only be taking up some MB, Help!

Downloading music illegally (iphone)?

I'm tired of paying for music. How do I download straight to my iphone and what sites/apps should I use? I don't want to jailbreak my phone though.

Any ipad/iPhone apps like total war?

I'm looking for an app, preferably in medieval times, where you control infantries to conquer enemy castles or bases or something of the sort.

It's weird, but I have found a deep desire to play total war, but my computer can't support it, so I look to iOS. I have not found anything except a app that costs $9.99. And I can't think of too many people who would pay that.

How much does it cost for Apple to fix a shattered iPhone 5 screen?

I'm an idiot and my phone fell face flat on the concrete and kind of you know… Shattered the screen. It's not as bad as some peoples, but it's pretty bad. I literally can't even look at this phone without wanting to punch myself in the face for being an idiot. Well, fortunately I'm going tomorrow to replace or repair it, whichever, and I wanna know how much will this cost? You really don't understand, I can't look at this phone without feeling like an idiot. I was planning on buying a case this weekend too! I sure learned from this stupid mistake, ugh.

Also, I have T-Mobile, and can T-Mobile fix it also? I don't have insurance or anything…

HOW TO BACK UP MY IPHONE? WHAT DOES THIS DO

So i bought a whole bunch of new songs on my phone and now when i plug it into my laptop, all of the songs i bought on my phone are not dowloading to my computer. I'm planning to get the new IPhone but i need to know how i can back up everything i have on my phone before i do that and loose $20 worth of music.

My iPhone contact list keeps getting replaced by the one in the iphone I sold?

I recently got the new iphone 5S. I sold my older 4S to a friend's son. He did not have money for a data plan so I turned off data in the settings. I deleted apps that might have had personal information in them. I also emptied my address book, signed out of e-mail, and so on. I was very careful about it. He put his simm card in it from his prior phone. I did not do a factory reset because I thought without an iphone account he may not be able to get any apps.
Since then, I have signed up for their dang iCloud business.
Now for the question, every few days this week, my Contacts list will disappear and be replaced by his. I have mine backed up but it's still quite annoying. I'm paranoid about calling apple to complain because I don't know what the rules are on this kind of thing and if they will try to force him to have a data plan or disable the phone somehow if they find out the phone is being used by someone. I tried backing up my data to the cloud and also tried resetting my iCloud/apple password. Nothing has stopped the problem.
Why is this happening? What can I do about it?

New mophie juice pack air problem?

Today I got the mophie juices pack air online and I put the case on my new iPhone 5S and it said this case may not be compatible with your device. Then I charged the case and it is draining my phone battery… The case I got it mophie special edition red. @ first I thought It was because it's the 5S then I tried it on someone's iPhone 5 & it said it might not be compatible. So I don't know what the problem is? Am I doing something wrong?

I'm the only one without an iphone?

It sucks that I'm the only one with a cheap *** phone, and hey I'm not spoiled but those dumb b**ches always show off their iphones like stupid to me like I don't have a smartphone. No offense what I said just that these kids are crazy and won't stop bugging me-.-'