My iphone screen is working?

Its not scratched or cracked and literally nothing happened to it
I was on tumblr on my phone then put it away for a few minets, the when I looked at it again it wasn't working
I atched it to a power source to see if it had no battery, it synchronized to the computer but the screen still did nothing
what's wrong with it and what can I do?

Added (1). Its been not working for around half an hour, then screen is just black!

Added (2). Its been not working for around half an hour, then screen is just black!

Added (3). Its been not working for around half an hour, then screen is just black!

Added (4). Sorry didn't mean to post that so many time.

Why Won't my IPhone 4 send pics?

It's brand spanking new. So no problems should really be present… But I can't send pictures! However, I can send text. I don't understand the issue… Could someone walk me through how to fix this problem?

Are there any big major differences between the iPhone 4 and iPhone 5?

Are there any big major differences between the iPhone 4 and iPhone 5?

Does iMessaging someone internationally cost money?

I live in the US. I have a friend in Australia who has an iPhone as do I and our texts have been sending as iMessages. I'm just wondering if these will be extra charges on my cell phone bill. I went to Settings and made sure that when my iMessage fails, my texts aren't sent as SMS, so am I safe?

Can you buy an iphone from the apple, store and then unlock it?

I want to buy an iphone from the apple store & after getting it unlocking it myself. Would it come with a plan? Could I do that?

My iPhone screen protectors is really dirty, is there a way to clean it?

I got a screen protector for my white iPhone (it one that they roll on for you and is suppose to stay on there for a really long time) and it is really dirty and gross on the edges and I was wandering if there was a way to clean it without taking it off?

What do I delete to free up Storage on my iPhone?

What do I delete to free up Storage on my iPhone?

Is the iPhone 5 good enough for vlogging?

Is the iPhone 5 good enough for vlogging (video blogs)? With regards to the sound quality,
images quality etc… Also do you think it would be good enough to replace a camera on it's own for a amateur photographer but who still wants good shots?

Is there an untethered jailbreak for iphone 4, 6.0.1 for mac?

If so, how do i do it?

HOW TO DELETE DRAW SOMETHING ACCOUNT OFF IPHONE?

I was logged in to my normal account then i logged in with my facebook account.
now it won't let me re login with my original email account? (the account i want to remove as its got my old username i want to use) it won't recognise my password however i have the same password for everything. I keep pressing the forgot password option but it won't even send the email when it says it has.

anyway to delete my old account!