Problem with iPhone, read down bellow please?

I have a problem with my iPhone 6. It turned off, and it won't turn back off. I tried charging it, but that doesn't help anything. I tried going on iTunes to maybe reset the phone or something but that doesn't do anything either. ITunes can't even recognize the phone. Any ideas on what it could be. It might be dead, or the iPhone's battery is dead. Please let me know as soon as you can!

What exactly is iCloud storage?

I'm running out of space on my iPhone and I was going to buy 200 gb of iCloud storage. If I do this, will I get more storage on my phone for music and everything else?

How to get past the the iPhone setup on an iPhone 4?

I recently got a new phone but still wanted to use my old iphone 4, for music. There was a lot of extra clutter that I wanted to clear off of the phone, and so I did a factory restore. However, now I can't get past setup since it does not have a SIM card.

How to transfer ownership when purchasing used iPhone 6?

So I have been looking at iPhone 6 and 6 Plus phones on eBay. I wanted to buy a broken one and repair it but I see a lot of phones for sale with bade ESN/IEMI/locked iClouds. ASSUMING All THESE THINGS ARE GOOD, what is necessary to "transfer ownership" from the previous owner to me so that the iCloud isn't locked? They won't be able to use it until I repair it. Am I going to need their Apple ID and password? I'm an Android guy so I'm not very familiar with Apple.

My iPhone 5s screen has small hairline cracks due to overheating? (I think)?

So I've never dropped my phone (only had it for a few weeks) and there's nothing I can think of that would have caused these multiple small thin cracks. None of which are on the actual screen of my phone, just the very top left hand corner of the whole phone and then all the way along the bottom of the phone underneath the home button. There are lots of them and I can't think of anything that would've caused them apart from the fact that my phone drastically overheats very often? Could this be a reasonable cause or not?

Photos from a water damaged iPhone 5?

I accidentally put my iPhone 5 through the wash and now it doesn't work. Won't even turn on. I know it's a long shot, but does anyone know if there's a way to retrieve my photos from the device at all?

Which upcoming generation of Iphone should I get?

Hi, So now that the Iphone 6s will be coming out the iphone 6 Will be 549$ I'm trying to decide whether I should get the Iphone 6 for cheaper than th iphone 6s or go ahead an spend an extra 100$ for the 6S will it be a significant difference in terms of quality and performance?