Why won't my internet explorer open?

So this happened a while ago and I haven't been able to get it to work. It happened after I put my music onto someone else's iphone. Now when I click on internet explorer it shows that it's loading but then nothing else happens after that.

How to find out what the factory cost of an item is?

I would like to do some research on some mobile phones.
but can't seem to find any answer on the internet. Or i'm not asking the right questions.

I would like to know what the production cost is of an iphone 5s 16GB for example.
or what the whole sale price per piece is?

Does anyone know how much it really cost?
cause i have an offer which seems low, and was afraid of being a chinese knock off.
and vise versa.

Selling a chinese knock off to my clients would be bad for business.

So how do i find or does anyone know where i can find a approximate whole sale price is for iphones

Getting a new iTunes account?

I know the 7 update for the iPhone came in. I know it shows you all past music that you bought. I got rid of them and I'm getting a new phone. I want a new iTunes account too. With all of this music I have on this phone now, will the past music still be on my new iTunes account?

Unlock/ Jailbreak iPhone 4s?

My ultimate goal is to unlock my iPhone 4s. I have ios 7.0.3. How can I unlock my phone. Its a AT&T phone, and i need it to work for t mobile. I think jail-breaking it would unlock the phone, but i can't find a way to jailbreak it. Or how can i downgrade my ios to 6.1.2, so then i would be able to jailbreak it.

Cheapest place to but iphone 4s?

My son has asked for a iphone 4s for his xmas and not sure where to get one from - he is 12 and on a monthly contract with Orange at moment but its only £7.50 a month with little date so not sure whether to buy outright or just get a contract - please any advise would be great full

How to swap contacts to my new iphone without using itunes?

I just want to get the contacts from my dodgy iphone4 onto a new iphone4 but when i back up the old one and then plug in the new one and click on the manual restore back up it doesn't show that i have the option to use the back up i've just done. Is there any other way of swapping my contacts over?

Is there an ask.fm tracker available? - 1

An iPhone app maybe? I've checked the App Store but I can't find anything. I've heard there's one but I'm not sure if that's true and quite a lot of people at my school seem to think they've found out who asked them questions using this tracker so I'd like to see for myself

Is there a glass iPhone 5 back protector?

I have a Spigen Glas.TR on the front. I really like using my iPhone without a case, but the aluminum on the backplate scratches easily. Is there a tempered glass backplate I can purchase or a really clear film I can put on it?

Dropped my iPhone 4 now its acting weird?

It keeps turning on and off. The service has said "Searching… " for a while now. My phone was fully charged when it dropped, now its at 1% and won't charge. I JUST got my phone fixed and now its doing this again. Nothing cracked on it, and its acting like this. I'm pissed. Can someone tell me what's going on?

Added (1). Oh, and when I unplug it, it shuts off again.