How to activate a new iPhone? - 1

So I recently lost my iPhone 4s and since I have insurance I decided to do a phone claim. I got my new iPhone 5c today.

I want to know how I can activate my 5c and deactivate my 4s?

If I like a picture on Instagram and then unlike it?

I liked this guys picture on instagram but then unliked it a few mins later. I know the person won't get a notification that I liked it if they weren't on instagram, but if they have their "notifications" set on for instagram on their iPhone, will it show up on their lock screen? As "___ liked your photo on instagram" even though i unliked it? Thaaaanku

Can't view a video on my iPhone?

So I went to a concert last night and took a video of a song which lasted about 3 minutes ish, anyways my phone had 91% battery and it still said I have memory left over so taking the video was fine. I tried to watch it today but it's came up white and it says 'Mov' but when I press the play button it says 'The operation could not be completed' so I can't watch my video, even though other videos work etc, please help!

How to find the thief? Should i report this to police office of my city?

I bought an iphone 5 from a guy that I found on craiglist for $300. He said it was factory locked not user locked. Factory locked can be unlocked for like $75 but user locked can't be unlocked. When i took it to store it was user locked and i can't use it anymore. I googled the phone number but can't find any history of the number. It looks like that guy stolen it and sold it to me. Should i report to police? Can they do something for me?

Added (1). I live in los angeles.

What device will support iOS 8?

Alot of people say the iPhone 4 won't get iOS 8 b/c the iPhone 3GS did not get iOS 7 but who knows Apple might surprise us and make the iPhone 4 supported on iOS 8 just like what happened with the iPhone 3GS on iOS 6 i know iOS 8 will for sure work on the iPhone 5S 5C 5 and iPad air iPad 4 iPad mini retina no idea if it will work on the iPhone 4S iPod touch 5th gen iPad 2/3 and mini 1st gen and even the iPhone 4 witch many people say it will not get iOS 8 when it comes out to the public. What device will get iOS 8?

How much is a 2 year contract cancellation fee for AT&T?

I've been using my Pantech cellphone and I want to change it when the the iPhone comes out. The iphone will be releasing in 7 months (I'm guessing and it's very close to October) I wanted to change my cellphone because my cellphone sucks and doesn't have any full internet access in it (or easily view any website Ex: Memecenter) How much will it cost to cancel the contract when I wanted to upgrade for an iPhone 6 after a year of using my Pantech cellphone?

New iPhone 5s urgent please enter and help D

I got a new iPhone 5s last christmas and I started using it the 26th of december, I got a problem that I can't use the 3g function outside which means I can't use internet outsite (I can connect only with Wi-Fi) I tried any solutions suggested from the Apple center's "genius", it wasn't my sim's problem because I tried it on another iphone 5 and it worked perfectly, I did everything possible, now the thing that I can't really stand is arent they supposed to change my phone and give me a new one? Since its a new phone's problem itself? I hate that I payed that much for phone that isn't doing its proper job and all they can do is repair it and not give me a new one?

Added (1). I don't really get your point, your problem might be because you have an old version of phone, I used to have that problem on my iphone 3 and 4 and it's due to the software when the idevices are starting to be slow, people pay a lot to their products it's a choice of mine I don't want people saying then don't buy it, I never encountered this problem before, and its really annoying cause the i've been using the phone in less than 3 months and it was an internal problem and all they can offer is repair?! What the?! I'd get your point if I did broke the phone, like when my boyfriend dropped his iphone 4s inside the pool or if I dropped it on the floor and it was externally broken, there we can talk about your pointless answer.

Added (2). thank you Hugo I did try what you said, but this stupid "genius" sent my phone on repair just yesterday what should I do now? It should be back in 5-10 days can I cancel the repair and complain? I'm really annoyed, I live here in Italy so 4g isn't available here:/

Can you activate a bad imei iphone on straight talk?

I'm trying to find a cheap iphone to switch to since the one I have is verizon and I need to switch to straight talk. And the cheaper ones have bad imei or are broken. So I was wondering if you could still activate a bad imei iphone on straight talk. Any help?

Why my order does not arrive?

Hi, i have order 9 days ago an iphone case from redbubble and my order doesn't arrive
i live in italy
site tell my order is manifactured and shipped but when it arrive?