Unlocking a Verizon iPhone 5s?

I came across several sites that guide you through the unlocking process via iTunes to unlocking the iPhone 5s. They all seem to work for every carrier but with Verizon it unlocks but for non USA carriers. I'm confused as to I thought Verizon's iPhone 5s is unlocked but only for non US carriers. Just trying to figure out if it is indeed possible to unlock my verizon iPhone 5s?

If so, what would be the best way to do so?

How to find contests which you do not have to pay to win free items?

So basically on instagram, people have those shops, and they sometimes have free contest giveaways, where you don't pay a cent, then you just give your address and get items shipped to you like iPhone cases, jewelery, etc. I need something which would ship to SOUTH AFRICA. And i'm not able to pay anything, so nothing for shipping, etc. What are some websites/insta accounts/fb pages/etc, which arent scams, and actually work like they do raffles or stuff?

MacBook doesn't recognise my iphone?

I bought a new charger cable for my iPhone 4. When I connect it with my MacBook Pro, it charges the phone alright, but the computer or the iTunes won't recognise my phone as a device so I can't transfer any data.

There's something stuck in the headphone jack of my iPhone 4 - how do I get it out?

There's something stuck, it seems to be a small piece of metal/plastic, inside the headphone jack of my iPhone 4. It's not part of my headphone jack or anything I have directly inserted into the jack, I literally woke up a few days ago and neither of my 3 pairs of headphones would go in. I've tried to use paperclips and toothpicks to pinch/wedge/shake it out, but it might be part of the inside of the iPhone.

Do you have any idea what it could be/how I can get it out and listen to music again?

Can't open videos on snapchat, iPhone 5s?

So i recently bought an iPhone 5s and when i'm using snapchat it won't let me open the videos my sister sends me with her front camera. Her phone is a Sony xperia something, but none of her other friends with iPhone are having trouble opening her videos. It's so weird because I can open videos from everyone else! It's just the videos from her that won't open!
But whenever she snaps me a video from her normal camera (not the front one) it works just fine. This is really bothering me! So annoying! Is anyone else having the same problem?