I'm scared my iPhone will explode?

I have a iPhone 4S and I been reading about how they explode and someone died and I'm worried that my phone will explode while I sleep

How to activate my iphone 5? - 1

So i bought an iphone 5 from some dude and we met at a local sprint store so i could verify that it had a clean ESN and wasn't stolen. So everything went smoothly until i got home and tried to restore the iphone. I put it in recovery mode and restored it. Now the phone says i need the original Apple Id and Password that was used on the phone, which i don't have because i wasn't the previous owner. Also forgot to mention that the previous owner was running IOS 7 which has that new anti theft thingy. Is there any was possible to activate the phone by going to an apple store or something. I've already tried contacting the guy but its pretty late and hes probably sleeping. What can i do?

How to delete iPhone history? - 2

No matter how hard I try, I can't get some of my history to delete. I have deleted the history through the browser itself & deleted the history/cache through the settings app but still nothing. It's also like the most random history ever that won't delete. It's actually websites I've never visited on my phone before. I've also gone through my bookmarks & it's not accidentally bookmarked.

Getting my first iPhone ever. Should I go for the 5 or 4s?

I'm going to get my first ever Apple product and I'm going for an iPhone. I'm going to use my own money so I want to make sure I make the right decision. I'm just not sure should I get the 4s and save some money or just go ahead and get the latest and greatest 5. I can afford either of them. I'm planning on having this phone for a quite a long time (3-5 years) So should I just get the 5 since its the latest model and I can afford it? I mean what's the point of buying an older model if I can get the latest one, right? Looks like I just answered my own question but I'd like to hear your opinions!

Where can I watch the movie Into the Wild for free?

I have an iPhone 4 and I really want to watch this movie online. Are there any websites where I can watch it for free? YouTube isn't free because you have to pay. And I don't have Netflix or Hulu. Also my phone doesn't have flash player so can you give me a website that will work for an iPhone 4?

Why won't the volume on my iPhone work?

My iPhone 4 won't play any music with my earphones in, when I go to the app it says it the volume is unavailable. I checked all my other apps on my phone that play music and they all said the same thing.
Is there anything I can do to fix it?