Why can't I download AppTrailers on my iPhone anymore?

2 or 3 months ago, I downloaded AppTrailers on my iPod. Now, I can't find it on my app store. And whenever I click on a link where it sends me to the download link, "This is currently unavailable to download in the US." pops up. What can I do to fix this?

Why don't my Emojis work.iPhone 4 iOS 6.0.1 iMessage?

People get my Emojis but I don't get theirs I get?=? Sometimes I get blanks. Btw everything is updated on my phone and my emoji keyboard is on. Is there an emoji app I should download if yes please give me the link. And iMessage doesn't always work with all iPhone users its set as text message instead of iMessage" and they get my Emojis even when I use text message but I don't get their. If you have an answer thank you: D

If I change my icloud will my apple ID work?

I changed my apple ID on my IPhone. But when I go to update and app the old apple ID is still coming up. I'm still logged in as my old ID on icloud. If I change the ID on icloud will my new apple ID work?

My new iPhone 5 won't receive some texts?

I got it yesterday and I use bell. I'll only not get some of them but its still annoying and then I'll end up getting them like an hour later after they were sent! Why is this happening and how can I fix it?

I want to get custom themes on my iPhone 5, but?

I have heard rumors that if you put music from your computer on your iPhone 5 it will reset your entire phone, and I want to put video game music on my phone (yes, I know), and one being the San Andreas theme to put as my ringtone. I plan on downloading whatever themes and dragging it onto iTunes on my PC, if I then link my phone to the PC and get the iTunes files from my PC onto my phone, will I be okay? Thanks!

Added (1). Basically what i'm asking, will burnt music reset your phone?

Why won't my HP computer let me browse the internet?

Hi, well my HP computer has been acting strange for a while now, but just 2 months ago it hasn't been able to surf the internet. I know it has something to do with the computer itself and not the Wi-Fi, or router. The internet and Wi-Fi is just fine because it's working on my laptop, iphone, ipod, etc. But the HP computer itself won't let me browse the internet. Every time I click on internet Explorer, it immediately says "could not display page" or something like that. And I've looked for every possible way to fix it, but it won't work. And yesterday, I saw I had to update apple software, so when i tried to install it, it said "could not install. Please check internet options" I've looked through all the internet options, no matter what, i can't go online or install anything. I want to call someone to come and see what's wrong with it but if they actually come to my house, it'll be pricey. Thanks so much for your time.

Added (1). OH, and it is connected to the internet 100% sure it is. It's surely connected. And, how do i add something like google chrome, etc, when I can't use the internet? It won't let me.

IPhone 4, 4s, 5. What's the difference?

I'm looking into getting an iphone, and I want to know if there's a major difference between the three latest models. If there isin't I might as well save me some money and get the 4, or even the 4s. And since apple is always putting out new stuff, how much could it really change right? Well thanks I hope to get some good feedback